Hi everyone


,

My 2011 W212 250 CGI has been experiencing sudden engine shutdowns since last year, with all signal lights on the dashboard turning on. I have checked the readings with an OBD scanner and the results are as follows. I took it to the garage for its annual check-up, but they were unable to find anything wrong. Can anyone help regarding this issue? Many thanks!!Car Scanner ELM OBD2

Version: 1.102.7/1.102.7/iOS

DTC report

Connection profile: Mercedes-Benz OBD-II / EOBDDate: 30/1/2024 7:45:47 PM

VIN: WDD2120472A513805

============================

OBD-IIOBD-II

DTCs: 1

----------------------------

P126F(00) [0x126F00] Archive (inactive)

Status: Confirmed, Test failed since last DTC clear

============================

Engine control unitEngine control unit

DTCs: 1

----------------------------

P126F(00) [0x126F00] Archive (inactive)

Status: Confirmed, Test failed since last DTC clear

============================

Transmission control unitTransmission control unit

DTCs: 7

----------------------------

U0121 [0xC121] Archive (inactive)

Data bus, anti-lock brake system (ABS) control module - no communication

Status: Validated and stored in non volatile memory

----------------------------

U0100 [0xC100] Archive (inactive)

Data bus, engine control module (ECM) A - no communication

Lost Communication with ECM/PCM A

Status: Validated and stored in non volatile memory

----------------------------

U0126 [0xC126] Archive (inactive)

Data bus, steering position sensor control module - no communication

Status: Validated and stored in non volatile memory

----------------------------

U110B [0xD10B] Archive (inactive)

Status: Validated and stored in non volatile memory

----------------------------

U0167 [0xC167] Archive (inactive)

Data bus, immobilizer control module - no communication

Status: Validated and stored in non volatile memory

----------------------------

U0164 [0xC164] Archive (inactive)

Data bus, AC control module - no communication

Status: Validated and stored in non volatile memory

----------------------------

U0141 [0xC141] Archive (inactive)

Data bus, body control module (BCM) A - no communication

Status: Validated and stored in non volatile memory

============================

ABS control unitABS control unit

DTCs: 8

----------------------------

C074A(00) [0x474A00] Archive (inactive)

Status: Confirmed, Test failed since last DTC clear

----------------------------

C074B(00) [0x474B00]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C074C(00) [0x474C00]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C0752(00) [0x475200]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C0754(00) [0x475400]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C0755(00) [0x475500]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C0756(00) [0x475600]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

----------------------------

C1752(00) [0x575200]

Status: Confirmed, Test failed since last DTC clear, Warning indicator requested

 

Too many error codes listed to start.

Standard practice is to record original codes (one above)
Delete ALL the codes
Start the vehicle and scan again
Check for new codes, select the most likely to trigger other codes, and go from there.

While doing that, how old are your batteries? Have you checked your batteries' voltages ? Either with a voltmeter, or using the car's cluster

 

Do yourself a favor, invest in a $150 scanner tool.
It will automatically translate fault codes with English descriptions.

Right now your partial list of computer codes are meaningless. Unless someone sort things out, this report will remain ...

 

Beat me to it!

 

I’ve cleared all codes and scan again and found P060C and P126F.

Battery has been replaced since last annual check on December 2023.

 

P126f key be related to eco start/stop if your car has it
P060C is related to ECU processor error

However, w/o an MB additional specific codes, it is just a hint where to look next

 

The key low battery signal is always on, regardless of whether I replace the battery in the drawer or go to the grocery store to get a new one. I'm not sure if it is related to P126f or not.

 

 

Do you have a second key? Use that one.

(If you don't have a second key, GET ONE. They're not cheap, and a Mercedes dealer can program a new fob without needing a working key, but you don't want to be stranded or unable to drive over a weekend or holiday.)

Try removing the push-to-start button and use your key. Does that fix the codes?