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Seems to be stuck in gear not sure but seems like second or third and the check engine light is on?

Tiny
MCHAWLEY42
  • MEMBER
  • 2009 MERCEDES BENZ C350
  • 3.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
Also the dash display which normally shows PRND and C (which I believe is for cruise and sport option) only shows PRND and the C seem to have disappeared.

But initially when it happens I switch the engine off and restart it which seems to solve the problem for a while but the problem is now constant also now when I put it in D or R there is a little thump.
No-communication with transmission control module
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Monday, October 21st, 2019 AT 2:26 AM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

Is that the code? No-communication with transmission control module What is the number please? Lets begin by checking the fuses. Here is a guide to show you how and the fuse locations and definitions for your car below:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here are all fuse and relay locations for your car please check the fuses with the key on. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Tuesday, October 22nd, 2019 AT 4:09 PM
Tiny
MCHAWLEY42
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The error code is Event 1405.
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Wednesday, October 23rd, 2019 AT 12:10 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Did you check the fuses are they okay? Also I assume the code is a P code? Which is an EGR problem which doesn't make sense. Is this a Euro Car?
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Thursday, October 24th, 2019 AT 9:46 AM
Tiny
MCHAWLEY42
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  • 5 POSTS
Yes I check the fuses. It’s a German.
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Thursday, October 24th, 2019 AT 9:52 AM
Tiny
MCHAWLEY42
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  • 5 POSTS
1405 communication with control unit transmisssion has a problem.

U010087 Communication with engine control unit has malfunction
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Thursday, October 24th, 2019 AT 9:55 AM
Tiny
MCHAWLEY42
  • MEMBER
  • 5 POSTS
Road tested vehicle, found vehicle slams into gear when selector is moved into forward or reverse ranges, and transmission does not shift. Performed quick test, no faults found in ME, found only event 1405 no CAN message received from transmission control unit. Transmission control unit is not showing up on quick test, ABR also showing no CAN message received from engine control module or electronic transmission control unit (event 6106). Tries to access transmission control unit. Communication not possible.
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Thursday, October 24th, 2019 AT 10:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Fuse #33 10 amp (front SAM control) check with the key on does it have power?

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please let us know what you find.
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Thursday, October 24th, 2019 AT 11:46 AM

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