{"id":533739,"date":"2026-07-17T17:03:12","date_gmt":"2026-07-17T21:03:12","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=533739"},"modified":"2026-07-17T17:03:12","modified_gmt":"2026-07-17T21:03:12","slug":"1999-mercedes-benz-c-class-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/","title":{"rendered":"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module in the 1999 Mercedes-Benz C-Class 2.3L manages fuel delivery, ignition timing, and emission controls. When it fails, the vehicle may misfire, stall, or lose power.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>Engine Control Module replacement requires 0.5 hours of labor.<\/li>\n<li>Powertrain Control Module relearn also takes 0.5 hours.<\/li>\n<li>Service Bulletin S-B-07.61\/89a S-B-54.21\/244a addresses ECU flashing for all models.<\/li>\n<li>S-SI-MBNA-07.5\/1 covers modified ECU for specific engines.<\/li>\n<li>S-B-54.50\/247 mandates trip computer reset after ECU update.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>You may notice your 1999 Mercedes-Benz C-Class 2.3L behaving oddly\u2014engine hesitation, erratic idle, or a sudden loss of power. These symptoms often point to the Powertrain Control Module (PCM) or Engine Control Module (ECM). Understanding what these modules do, how to replace them, and what steps follow a replacement will help you keep your vehicle running reliably. This guide explains the role of the PCM in your car, outlines the replacement process, and describes the factory programming steps that are already handled by Flagship One units. With this knowledge, you can make an informed decision about whether to repair or replace the module for the best performance.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 1999 Mercedes-Benz C-Class<\/h2>\n<p>The PCM in the 1999 Mercedes-Benz C-Class 2.3L coordinates engine functions, including fuel injection, ignition timing, and emission control. It communicates with the ECM and other vehicle systems to adjust performance in real time. <a href=\"https:\/\/www.fs1inc.com\/mercedes-benz-ecm-pcm-ecu-engine-computer\/c-class-engine-computers.html\">replacement engine computers for the 1999 Mercedes-Benz C-Class<\/a> The module\u2019s integrity is essential for smooth acceleration, efficient fuel use, and compliance with emission standards. When the PCM loses communication or fails internally, the engine may misfire, stall, or trigger diagnostic trouble codes. Proper replacement restores the module\u2019s ability to manage these functions accurately, ensuring the vehicle performs as intended.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What Replacing the PCM Involves<\/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\">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 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 the new PCM, the factory requires a relearn of the Powertrain Control Module to sync the new unit with the vehicle\u2019s calibration. Flagship One units arrive VIN-programmed, meaning the relearn step is already completed. Thus, the technician can skip manual programming and proceed directly to system checks. <a href=\"https:\/\/www.fs1inc.com\/1999-mercedes-benz-c230-2-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">VIN-programmed 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>Common signs of PCM or ECM failure in the 1999 Mercedes-Benz C-Class 2.3L include engine misfires, stalling under load, unexpected loss of power, and the appearance of a dead scan\u2011tool connection. Drivers may also notice erratic shift patterns or a sudden increase in idle speed. If the engine shows a fault code such as powertrain control module failure the PCM is likely the root cause.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\n<p>The following service bulletins apply to this vehicle: S-B-07.61\/89a S-B-54.21\/244a covers ECM flashing for all models; S-SI-MBNA-07.5\/1 addresses modified ECUs for certain engines; and S-B-54.50\/247 requires resetting the trip computer after an ECU update.<\/p>\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\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">S-B-07.61\/89a S-B-54.21\/244a: Engine Control Module (N3\/10) Flashing MY-All Models All<\/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\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">S-SI-MBNA-07.5\/1: ENGINES 104 111 HFM-SFI MODIFIED ENGINE CONTROL MODULE<\/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\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">S-B-54.50\/247: Reset Trip Computer After Software Update of ECU Models All with Code 801 MY2011<\/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 1999 Mercedes-Benz C-Class<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the battery\u2019s charging system in good condition to avoid voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Check and clean all electrical connectors and grounds regularly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid using a jump\u2011starter that supplies excessive voltage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Respond promptly to any diagnostic trouble codes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Maintain the integrity of connector seals to prevent moisture ingress.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Schedule regular maintenance to detect early signs of module wear.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How long does it take to replace the PCM in a 1999 Mercedes-Benz C-Class 2.3L?<\/h3>\n<p>The documented labor time for replacing the PCM is 0.5 hours. An additional 0.5 hours is required for relearning the Powertrain Control Module.<\/p>\n<h3>Do I need to perform a special reset after installing a new PCM?<\/h3>\n<p>Yes, the factory requires a reset of the trip computer after an ECU update, as noted in Service Bulletin S-B-54.50\/247. Flagship One units handle this automatically.<\/p>\n<h3>Will a new PCM fix my engine misfire issue?<\/h3>\n<p>If the misfire is caused by PCM failure, replacement will resolve the issue. Other causes may still require additional diagnostics.<\/p>\n<h3>Is the new PCM fully calibrated for my vehicle?<\/h3>\n<p>Flagship One units are VIN\u2011programmed, meaning they are pre\u2011calibrated for the 1999 Mercedes-Benz C-Class 2.3L. No additional programming is needed.<\/p>\n<h3>Can I use a refurbished PCM instead of a new one?<\/h3>\n<p>Refurbished units are available, but they may not be pre\u2011calibrated for your specific VIN. A new unit guarantees the correct settings for your vehicle.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>Whether you choose to repair the existing PCM or opt for a refurbished replacement, understanding the specific requirements for the 1999 Mercedes-Benz C-Class 2.3L will help you make a safe, informed choice. The correct module will keep your vehicle running smoothly and reliably.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/1999-mercedes-benz-c230-2-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 1999 Mercedes-Benz C-Class<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/mercedes-benz-ecm-pcm-ecu-engine-computer\/c-class-engine-computers.html\">Mercedes-Benz C-Class module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>For the 1999 Mercedes-Benz C-Class 2.3L, a properly installed and calibrated PCM is vital for performance and reliability. Consider a reputable replacement to maintain your vehicle\u2019s functionality.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 1999 Mercedes-Benz C-Class 2.3L shows trouble codes or poor performance, a PCM replacement may resolve the issue safely and efficiently.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,266],"tags":[52,1532,267],"class_list":["post-533739","post","type-post","status-publish","format-standard","hentry","category-car","category-mercedes-benz","tag-52","tag-c-class","tag-mercedes-benz"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>1999 Mercedes-Benz C-Class 2.3L 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\/1999-mercedes-benz-c-class-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 1999 Mercedes-Benz C-Class 2.3L shows trouble codes or poor performance, a PCM replacement may resolve the issue safely and efficiently.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-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=\"2026-07-17T21:03:12+00:00\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide\",\"datePublished\":\"2026-07-17T21:03:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/\"},\"wordCount\":875,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"keywords\":[\"1999\",\"C-Class\",\"Mercedes-Benz\"],\"articleSection\":[\"Car\",\"Mercedes-Benz\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/\",\"name\":\"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"datePublished\":\"2026-07-17T21:03:12+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/1999-mercedes-benz-c-class-pcm-replacement-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"1999 Mercedes-Benz C-Class 2.3L 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":"1999 Mercedes-Benz C-Class 2.3L 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\/1999-mercedes-benz-c-class-pcm-replacement-guide\/","og_locale":"en_US","og_type":"article","og_title":"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide - Flagship One Blog","og_description":"If your 1999 Mercedes-Benz C-Class 2.3L shows trouble codes or poor performance, a PCM replacement may resolve the issue safely and efficiently.","og_url":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-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":"2026-07-17T21:03:12+00:00","author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide","datePublished":"2026-07-17T21:03:12+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/"},"wordCount":875,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"keywords":["1999","C-Class","Mercedes-Benz"],"articleSection":["Car","Mercedes-Benz"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/","url":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/","name":"1999 Mercedes-Benz C-Class 2.3L PCM Replacement Guide - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"datePublished":"2026-07-17T21:03:12+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/1999-mercedes-benz-c-class-pcm-replacement-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"1999 Mercedes-Benz C-Class 2.3L 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\/533739","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=533739"}],"version-history":[{"count":1,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/533739\/revisions"}],"predecessor-version":[{"id":533740,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/533739\/revisions\/533740"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=533739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=533739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=533739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}