A Class, B Class - B180 W246 DEAD BATTERIES [CHANGED] FAULT CODES! ABS ESP EML! HELP
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B180 W246
A Class, B Class - B180 W246 DEAD BATTERIES [CHANGED] FAULT CODES! ABS ESP EML! HELP
My Car: MERCEDES-BENZ B-CLASS Sports Tourer (W246, W242) B180 (246.242), M270.910 Engine
1.6 Petrol Direct Injection
Mileage 73,000 km (46,000mls)
What happened?
• returned home after 8 months away;
Negative terminal was left on causing car battery to deplete and drain the Starter Battery(A0019828008) and the Auxiliary Battery(A0009829608)
These have been replaced with Brand New MB Batteries from Main Dealer Parts.
• I now have the following hard fault codes (*Please ignore - PA06DAA - aware of this issue*) that all seem to link to the Rear End Braking and Traction.
I have no idea what caused this and would like some help if possible.
The car drives - but the EML is now triggered causing the vehicle to drive in Limp Mode due to
C003700
State: Current
The Left Rear Wheel Speed Sensor Has a Malfunction.
Please see the following from the OBD Diagnostics:
1) Diagnostics Shows:
ECM - Engine Control Module (MED40) for Combustion Engine ‘M270’ (N3/10)
[FAULT: 2]
PA06DAA
State: Current
The actuation of the Valve of the Oil pump in the combustion engine has an electrical fault or open circuit
C003700
State: Current
The Left Rear Wheel Speed Sensor Has a Malfunction
TCM - Transmission Control Moduke (CGSFDKG (N15/13))
[FAULT: 1]
D40B00
State: Historic
An implausible Left Rear Wheel Speed Signal was Received
EPB - Electric Parking Brake
[FAULT: 1]
U012100
State: Current and Historic
Communication with ESP Has a Malfunction
ESP - Electronic Stability Program (N3 0/4)
[FAULT: 1]
U041586
State: Current and Historic
Implausible Data we’re received from control unit “Traction System”. There is an incorrect signal
SG - AWF - Control Unit ‘Distance’ Warning Function (A90)
[FAULT: 1]
C326600
State: Historic
Chassis CAN Bus: CAN Signal “Operating Condition” From Control Unit “Electric Stability Program” is Implausible.
2) Dashboard shows: See images attached
IMG_7660.heic
IMG_7661.heic
IMG_7662.heic
I really hope someone can help, as I’m stranded without a vehicle to drive. I’ve seen a video on YouTube
https://m.youtube.com/watch?v=zNW3YQhwpK4
Not sure if this is the same fix though.
• I have only changed the batteries thus far.
• there is a lot of brake dust/ soot and debris all over the rear breaking system (Alloys, Pads and Callipers may take off both wheels, and clean the area; and remove the sensor contacts and clean to see if this helps.
• Also considering ordering new speed and ABS sensors
All suggestions welcome.
Thank you so much!
1.6 Petrol Direct Injection
Mileage 73,000 km (46,000mls)
What happened?
• returned home after 8 months away;
Negative terminal was left on causing car battery to deplete and drain the Starter Battery(A0019828008) and the Auxiliary Battery(A0009829608)
These have been replaced with Brand New MB Batteries from Main Dealer Parts.
• I now have the following hard fault codes (*Please ignore - PA06DAA - aware of this issue*) that all seem to link to the Rear End Braking and Traction.
I have no idea what caused this and would like some help if possible.
The car drives - but the EML is now triggered causing the vehicle to drive in Limp Mode due to
C003700
State: Current
The Left Rear Wheel Speed Sensor Has a Malfunction.
Please see the following from the OBD Diagnostics:
1) Diagnostics Shows:
ECM - Engine Control Module (MED40) for Combustion Engine ‘M270’ (N3/10)
[FAULT: 2]
PA06DAA
State: Current
The actuation of the Valve of the Oil pump in the combustion engine has an electrical fault or open circuit
C003700
State: Current
The Left Rear Wheel Speed Sensor Has a Malfunction
TCM - Transmission Control Moduke (CGSFDKG (N15/13))
[FAULT: 1]
D40B00
State: Historic
An implausible Left Rear Wheel Speed Signal was Received
EPB - Electric Parking Brake
[FAULT: 1]
U012100
State: Current and Historic
Communication with ESP Has a Malfunction
ESP - Electronic Stability Program (N3 0/4)
[FAULT: 1]
U041586
State: Current and Historic
Implausible Data we’re received from control unit “Traction System”. There is an incorrect signal
SG - AWF - Control Unit ‘Distance’ Warning Function (A90)
[FAULT: 1]
C326600
State: Historic
Chassis CAN Bus: CAN Signal “Operating Condition” From Control Unit “Electric Stability Program” is Implausible.
2) Dashboard shows: See images attached
IMG_7660.heic
IMG_7661.heic
IMG_7662.heic
I really hope someone can help, as I’m stranded without a vehicle to drive. I’ve seen a video on YouTube
https://m.youtube.com/watch?v=zNW3YQhwpK4
Not sure if this is the same fix though.
• I have only changed the batteries thus far.
• there is a lot of brake dust/ soot and debris all over the rear breaking system (Alloys, Pads and Callipers may take off both wheels, and clean the area; and remove the sensor contacts and clean to see if this helps.
• Also considering ordering new speed and ABS sensors
All suggestions welcome.
Thank you so much!
Last edited by BClassSlkRo; Mar 15, 2024 at 12:13 PM. Reason: Edit Title “H” to “Help”
MBWorld Fanatic!
Joined: Jun 2014
Posts: 1,086
Likes: 443
From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
When you allow the batteries to die, all the modules they support go haywire. Even a small drop in voltage can cause some of the codes you've got.
Is the charging system up to scratch? Min 12.0v engine off and 13.7v engine on. If not, you still have a problem with the charging and/or battery system. Sorry If im telling you what you already know.
Check batteries again. Clear.codes. ABS sensors are problematic in that they fail AND they are very sensitive to a fluctuation in voltage. Use quality parts there as cheapo ones have shown to be a problem.
All your codes are voltage and communication related which typically points to low voltage. What scan tool do you have? It is MB specific? You'll struggle to clear codes of it isn't.
Is the charging system up to scratch? Min 12.0v engine off and 13.7v engine on. If not, you still have a problem with the charging and/or battery system. Sorry If im telling you what you already know.
Check batteries again. Clear.codes. ABS sensors are problematic in that they fail AND they are very sensitive to a fluctuation in voltage. Use quality parts there as cheapo ones have shown to be a problem.
All your codes are voltage and communication related which typically points to low voltage. What scan tool do you have? It is MB specific? You'll struggle to clear codes of it isn't.
Last edited by BlackML550; Mar 16, 2024 at 05:04 AM.
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,156
Likes: 1,770
From: Colorado
G550
Have you executed more than a single scan and fault code clearing? When I replaced my battery a year ago, it took 3 iterations to clear everything. Not sure if that was a consequence of my scanner's limitation or if fault codes are layered.
MBWorld Fanatic!
Joined: Jun 2014
Posts: 1,086
Likes: 443
From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
Agree with this. Also, the best way to change the battery is once you've done it, let ot sit with the Ignition on for 15 minutes before starting. It wakes up all the modules and allows them to power up before the starter, which can draw 100amps, temporarily drains the battery. Only works if your battery is fully charged.
