The Engine management light on?

Tiny
SAMUEL1903
  • MEMBER
  • 2013 MERCEDES BENZ 220CDI
  • 2.2L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
The car is slow to change gears, RPM is higher than it should be, and the engine light is on.
Monday, September 11th, 2023 AT 2:30 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
Yes, this sounds like the front SAM control unit is out, but we should do a CAN scan to see what codes are stored. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here is how to change the SAM controller out and I have included the transmission wiring diagrams so you can see how the system works. You can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please let us know what happens.
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Monday, September 11th, 2023 AT 6:26 PM

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