Cannot communicate with scanning tool

Tiny
DANIAM2021
  • MEMBER
  • 2003 MERCEDES BENZ E320
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 49,000 MILES
Multiple error codes, display cluster failure, battery/alternator failure, brae failure, A/C, wipers, horn stopped working. Car will star with a jump, but radiator fan goes crazy fast.
Tuesday, July 13th, 2021 AT 5:44 PM

3 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

What are the error codes that you have?
Is it giving you the "display cluster failure, visit dealer" ?
It appears to have some electrical malfunctions. There could be several factors.
Did this just happen all of a sudden?
How long have you owned this vehicle? Any symptoms before these issues?

https://youtu.be/p6AduLnO-Ds
https://www.2carpros.com/articles/check-engine-light-is-it-safe-to-drive

These vehicles have SAM control modules that could malfunction and create some strange issues.
First you need to figure out which SAM is bad then replace.

However the driver side SAM control module controls the A/C, wiper, lights and few other components that you are having issues with.

I have attached images showing the locations and functions of the SAM.

Please let me know any questions.
Thank you.
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Tuesday, July 13th, 2021 AT 6:59 PM
Tiny
DANIAM2021
  • MEMBER
  • 2 POSTS
You folks are awesome. Although I have not had luck finding my problem your response is appreciated.
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Wednesday, July 14th, 2021 AT 9:52 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
You bet!
Please feel free to reach out for any questions or concerns.
Thank you.
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Wednesday, July 14th, 2021 AT 10:06 AM

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