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I’m the new owner of a 2007 W220 C-Class, and recently I’ve been experiencing an issue where my Benz keeps turning off while slowing down or sometimes even while warming up in the morning. Today, while slowing down for a speed bump, the car shut off, and when I turned it back on, I noticed the check engine light was on. The car has been showing some signs for a while, such as the speedometer shaking up and down or feeling like it’s about to turn off when I turn the wheel all the way. Before I bought the car, the previous owner didn’t use it much.
your gonna need a Mercedes scanner and read those codes. or a maintenance item to try is to clean your throttle body blade and housing inside. This is a common problem with fuel injected cars.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
You still need to get a mercedes specific scanner. The LAUNCH Creader Elite 2.0 BENZ is highly recommended. You can find it on Amazon or KingBolenTool. Do not think NO LIGHT = NO PROBLEM.
Many of us are in the U.S. where that model is not sold. We’re going to need information about what the engine code for your C220 is or your VIN to give more specific recommendations.
Looks like you’ve got multiple modules reporting communication faults — stuff like the AMG PDU/Control unit, ESP, DAS, and even starter authorization errors. When you see CAN errors spread across several systems like that, it usually points to either a failing battery, a grounding issue, or a module that’s pulling down the CAN network intermittently.
Even if the car starts and drives fine, it’s likely operating in a degraded mode when these errors are present. I'd double-check the battery health under load and also inspect the ground points around the engine bay and under the interior trim. I’ve seen issues like this where a bad ground near the fuse box or under the driver’s kick panel caused cascading communication faults across unrelated systems.
This is definitely the kind of thing where a full system scan is critical. I’ve personally had great success using the YOUCANIC full system scanner. It reads and clears codes from every module — even those that don’t show up with generic tools — and helps identify patterns when CAN communication breaks down. It's a must-have when chasing electrical gremlins like this.
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