{"id":532096,"date":"2026-07-18T20:12:27","date_gmt":"2026-07-19T00:12:27","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=532096"},"modified":"2026-07-18T20:12:27","modified_gmt":"2026-07-19T00:12:27","slug":"2008-mercury-mariner-hybrid-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/","title":{"rendered":"2008 Mercury Mariner Hybrid PCM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2008 Mercury Mariner Hybrid PCM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">In the 2008 Mercury Mariner Hybrid, the Powertrain Control Module (PCM) manages engine and transmission functions. A failed PCM can cause a no\u2011start condition, misfires, or loss of communication with the transmission control module, leading to drivability problems.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM integrates engine and transmission control in the hybrid.<\/li>\n<li>Replacement requires 0.5 hours for each relearn or reset task.<\/li>\n<li>TSB 08-12-07 addresses no crank, no TCM communication, and theft light issues.<\/li>\n<li>TSB 08-03-01 covers MIL illumination with DTC U2062.<\/li>\n<li>Flagship One units arrive VIN\u2011programmed, skipping post\u2011install relearn.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2008 Mercury Mariner Hybrid has stopped starting, shows a malfunction indicator light, or displays a theft light, the Powertrain Control Module may be the culprit. The PCM is the brain that coordinates engine and transmission operations, and a fault here can produce a range of symptoms from no\u2011start to erratic shifting. This guide explains what the PCM does in your vehicle, how to replace it, and what steps are required afterward. By following the information below, you can make an informed decision about whether to repair or replace the module and ensure your hybrid runs smoothly.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2008 Mercury Mariner Hybrid<\/h2>\n<p>The Powertrain Control Module in the 2008 Mercury Mariner Hybrid is responsible for monitoring and controlling both engine and transmission parameters. It interprets sensor data, calculates optimal fuel\u2011air mixtures, and directs the transmission to shift at the correct times. When the PCM fails, it may no longer communicate with the Transmission Control Module, causing the vehicle to refuse to start or to shift poorly. <a href=\"https:\/\/www.fs1inc.com\/ford-lincoln-mercury\/mercury-pcm-ecm-ecu-engine-computer\/mariner-hybrid-engine-computers.html\">2008 Mercury Mariner Hybrid PCM replacement<\/a> This failure can also trigger the malfunction indicator light and store diagnostic trouble codes that signal the underlying problem.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM is located under the passenger side dashboard, behind the interior trim panel. Removing it requires disconnecting the battery, removing the trim, and sliding the module out. The replacement process involves a 0.5\u2011hour relearn for the Engine Control Module, a 0.5\u2011hour reset for the Engine Control Module, a 0.5\u2011hour reset for the Powertrain Control Module, and a 0.5\u2011hour relearn for the Powertrain Control Module.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\" alt=\"2008 Mercury Mariner Hybrid PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2008 Mercury Mariner Hybrid.<\/figcaption><\/figure>\n<div style=\"background:#f7f9fc;border:1px solid #e2e8f2;border-radius:10px;padding:18px 24px;margin:18px 0\">\n<h3 style='margin-top:0'>How to Reach the PCM on the 2008 Mercury Mariner Hybrid<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the powertrain control module (PCM) stud bolt nut and position the wiring harness aside.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the 3 PCM electrical connectors.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the 2 stud bolts and the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the PCM cowl seal.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Position<\/b> the wiring harness and install the PCM stud bolt nut.<\/li>\n<\/ol>\n<p style='margin:10px 0 0 0'><em>Work with the ignition off, and treat the module as static-sensitive: avoid touching the connector pins at any point.<\/em><\/p>\n<\/div>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Operation<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Configuration<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Book Time<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After installing a new PCM, the factory procedure calls for a relearn of the Engine Control Module and a relearn of the Powertrain Control Module. Because Flagship One units are shipped VIN\u2011programmed, these relearn steps are already completed and the module will communicate with the vehicle\u2019s systems immediately. <a href=\"https:\/\/www.fs1inc.com\/2008-mercury-mariner-hybrid-2-3l-pcm-engine-computer-ecm-ecu-programmed-updated.html\">VIN\u2011programmed replacement unit<\/a> for the correct application.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM in the 2008 Mercury Mariner Hybrid can manifest as a no\u2011start condition, stalling, or misfires, and may generate the DTC U2062. The malfunction indicator light may remain illuminated, and the vehicle may exhibit poor shifting performance or loss of communication with the transmission. Powertrain Control Module communication failure<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Bulletin<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Subject<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">What It Addresses<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>08-12-07<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">BUILT ON OR BEFORE 3\/8\/2008 &#8211; NO CRANK \/ NO TCM COMMUNICATION \/ THEFT LIGHT ON \/ MULTIPLE DTCS<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>08-03-01<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">MALFUNCTION INDICATOR LAMP (MIL) ON WITH DIAGNOSTIC TROUBLE CODE (DTC) U2062<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2008 Mercury Mariner Hybrid<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the charging system in good condition to avoid voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure all electrical connectors to the PCM are clean and secure.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid using a jump\u2011starter that delivers excessive voltage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly before they worsen.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect connector seals for damage and replace if necessary.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Perform regular battery maintenance to prevent low\u2011voltage conditions.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Can I replace the PCM in my 2008 Mercury Mariner Hybrid myself?<\/h3>\n<p>Replacing the PCM requires removal of interior panels, battery disconnect, and a 0.5\u2011hour relearn for each module. If you are not comfortable with electrical work, it is advisable to have a qualified technician perform the replacement.<\/p>\n<h3>What is the purpose of the relearn step after PCM replacement?<\/h3>\n<p>The relearn allows the new PCM to calibrate its internal parameters to the specific vehicle, ensuring proper engine timing, fuel delivery, and transmission shift points.<\/p>\n<h3>Will a new PCM eliminate the theft light issue mentioned in TSB 08-12-07?<\/h3>\n<p>A properly programmed PCM should resolve the theft light problem if it was caused by PCM communication failure, but the issue may also involve other security system components.<\/p>\n<h3>Do I need a special tool to reset the Powertrain Control Module?<\/h3>\n<p>A standard diagnostic scan tool that can send a reset command to the PCM is sufficient; no specialized hardware is required.<\/p>\n<h3>How long does a PCM replacement take in total?<\/h3>\n<p>The total time includes 0.5 hours for each relearn and reset, plus the time to access the module, resulting in a typical service window of roughly 2 hours.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When the PCM in your 2008 Mercury Mariner Hybrid fails, you can choose between a factory repair or a refurbished replacement. A refurbished unit from Flagship One comes fully programmed for your VIN, saving you the relearn step, and can be installed in the same time frame as a new module.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/media\/wysiwyg\/googleshop\/fordexplorer\/fordexplorer-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2008 Mercury Mariner Hybrid\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2008 Mercury Mariner Hybrid from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2008-mercury-mariner-hybrid-2-3l-pcm-engine-computer-ecm-ecu-programmed-updated.html\"><b>refurbished, VIN-programmed PCM for the 2008 Mercury Mariner Hybrid<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/ford-lincoln-mercury\/mercury-pcm-ecm-ecu-engine-computer\/mariner-hybrid-engine-computers.html\">Mercury Mariner Hybrid module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Replacing the PCM in your 2008 Mercury Mariner Hybrid restores engine and transmission control, eliminates the no\u2011start condition, and brings your hybrid back to reliable operation. Consider a refurbished replacement for a cost\u2011effective solution.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>2008 Mercury Mariner Hybrid may show a no\u2011start or MIL issue. Inspect the PCM for no crank or TCM communication and replace it to restore powertrain function.<\/p>\n","protected":false},"author":1,"featured_media":525984,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,259],"tags":[282,1482,260],"class_list":["post-532096","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-mercury","tag-282","tag-mariner-hybrid","tag-mercury"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"2008 Mercury Mariner Hybrid may show a no\u2011start or MIL issue. Inspect the PCM for no crank or TCM communication and replace it to restore powertrain function.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-19T00:12:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"650\" \/>\n\t<meta property=\"og:image:height\" content=\"294\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2008 Mercury Mariner Hybrid PCM Replacement Guide\",\"datePublished\":\"2026-07-19T00:12:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/\"},\"wordCount\":1049,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\",\"keywords\":[\"2008\",\"Mariner Hybrid\",\"Mercury\"],\"articleSection\":[\"Car\",\"Mercury\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/\",\"name\":\"2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\",\"datePublished\":\"2026-07-19T00:12:27+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2008-mercury-mariner-hybrid-pcm-service-figure.webp\",\"width\":650,\"height\":294,\"caption\":\"Figure from the factory control-module removal procedure for the 2008 Mercury Mariner Hybrid\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2008-mercury-mariner-hybrid-pcm-replacement-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"2008 Mercury Mariner Hybrid PCM Replacement Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. OEM Engine Computers  Control Modules\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\",\"name\":\"Flagship One, Inc.\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"width\":1341,\"height\":1098,\"caption\":\"Flagship One, Inc.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/flagshipone\",\"https:\\\/\\\/x.com\\\/theflagshipone\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC0oyKphffBM2qkJ-gKPmMXw\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\",\"name\":\"FlagshipOne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"caption\":\"FlagshipOne\"},\"description\":\"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.\",\"sameAs\":[\"https:\\\/\\\/www.fs1inc.com\\\/\",\"https:\\\/\\\/www.facebook.com\\\/flagshipone\\\/\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/fs1inc\"],\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/author\\\/flagship1inc\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/","og_locale":"en_US","og_type":"article","og_title":"2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog","og_description":"2008 Mercury Mariner Hybrid may show a no\u2011start or MIL issue. Inspect the PCM for no crank or TCM communication and replace it to restore powertrain function.","og_url":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2026-07-19T00:12:27+00:00","og_image":[{"width":650,"height":294,"url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp","type":"image\/webp"}],"author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"2008 Mercury Mariner Hybrid PCM Replacement Guide","datePublished":"2026-07-19T00:12:27+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/"},"wordCount":1049,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp","keywords":["2008","Mariner Hybrid","Mercury"],"articleSection":["Car","Mercury"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/","url":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/","name":"2008 Mercury Mariner Hybrid PCM Replacement Guide - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp","datePublished":"2026-07-19T00:12:27+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#primaryimage","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2008-mercury-mariner-hybrid-pcm-service-figure.webp","width":650,"height":294,"caption":"Figure from the factory control-module removal procedure for the 2008 Mercury Mariner Hybrid"},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/2008-mercury-mariner-hybrid-pcm-replacement-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"2008 Mercury Mariner Hybrid PCM Replacement Guide"}]},{"@type":"WebSite","@id":"https:\/\/www.fs1inc.com\/blog\/#website","url":"https:\/\/www.fs1inc.com\/blog\/","name":"Flagship One Blog","description":"Flagship One Inc. OEM Engine Computers  Control Modules","publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fs1inc.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fs1inc.com\/blog\/#organization","name":"Flagship One, Inc.","url":"https:\/\/www.fs1inc.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","width":1341,"height":1098,"caption":"Flagship One, Inc."},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/flagshipone","https:\/\/x.com\/theflagshipone","https:\/\/www.instagram.com\/flagship_one","https:\/\/www.youtube.com\/channel\/UC0oyKphffBM2qkJ-gKPmMXw"]},{"@type":"Person","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700","name":"FlagshipOne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","caption":"FlagshipOne"},"description":"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.","sameAs":["https:\/\/www.fs1inc.com\/","https:\/\/www.facebook.com\/flagshipone\/","https:\/\/www.instagram.com\/flagship_one\/","https:\/\/www.linkedin.com\/company\/fs1inc"],"url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/"}]}},"_links":{"self":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/532096","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/comments?post=532096"}],"version-history":[{"count":1,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/532096\/revisions"}],"predecessor-version":[{"id":535653,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/532096\/revisions\/535653"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media\/525984"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=532096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=532096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=532096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}