2010 B200 esp/ABS transmission limp mode
So with in a few meters, I get ESP error then ABS then the transmission goes limp mode , I loss the speedometer end gas gauge as well . Took it to the shop , codes shoes those 2 famous sensors in tranny . Can t remember ( speed sensor and something else) take the TCM out send it for repair . Come back . Still same issue… transmission shop send it to 2 other repair shop .. same issue . There is a reading for all 4 ABS sensor .. so maybe it,S an electrical issue . So took it to an electrician . He tells me it S the TCM bit to look at possibly the ABS control module . Got 2 used ones installed . Same problem but it got a little better now I can drive for about 2 kilometres before it all goes back to errors and limp mode . Local MB dealer will not take the car , they claim it S too old and I did not buy the car from them . What else can I do ?! Total loss here




The logic is that the speed sensors on each wheel which measure wheel speed translate that information back to the ECU and transmission. The transmission can go into limp home mode because its having trouble reading the wheel speed from the ABS Speed Sensor.
I'd be getting the car scanned again with a scan tool that will to MBs. Look for speed sensor codes and then let us know what the codes are.
Last edited by BlackML550; Jan 28, 2024 at 05:09 PM.
i found something new , so I turned off the ESP/ ABS and the transmission is working fine , drove it about 60km with no issues . So now it’s safe to say that it’s not the transmission. Going to back to garage next week to get rescanned .




You should buy a scan tool. Less than $200 will get you a decent one where you can read and clear the error codes. As another poster here said "You need to be able to have a conversation with your car". You'll save the $200 on the first diagnosis fee. It's well worth it and you will learn a lot. I don't leave home without mine.
Last edited by BlackML550; Jan 28, 2024 at 05:09 PM.
You should buy a scan tool. Less than $200 will get you a decent one where you can read and clear the error codes. As another poster here said "You need to be able to have a conversation with your car". You'll save the $200 on the first diagnosis fee. It's well worth it and you will learn a lot. I don't leave home without mine.
ABS pump rusty probe ,
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I assume your battery is in good health. Min 11.7 v with engine off and 12.7v with engine on. If not, that alone can trigger codes as modules are very sensitive to even small drops in voltage. The fuel related codes could be from this. Have you disconnected or jump started it at all? That can do it to. I assume whoever scanned it, then cleared the codes.
Next thing is to look at where the speed sensors connect to. Its probably the module you've highlighted with the corrision, but let's check it first to see if there isn't something in between that and the sensors. Post your VIN and I'll see if I can find a diagram.
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I assume your battery is in good health. Min 11.7 v with engine off and 12.7v with engine on. If not, that alone can trigger codes as modules are very sensitive to even small drops in voltage. The fuel related codes could be from this. Have you disconnected or jump started it at all? That can do it to. I assume whoever scanned it, then cleared the codes.
Next thing is to look at where the speed sensors connect to. Itprobably the module you've highlighted with the corrision, but let's check it first to see if there isn't something in between that and the sensors. Post your VIN and I'll see if I can find a diagram.
WDDFH3DB6AJ536808. As you said all 4 wheel sensors can’t go out at the same time . Cleared the codes and it came back . New battery in a few months ago ( transmission/ ABS problem was already there) voltage looks ok I’ll have to go see but I remember a low of 12.3 and high it 12.9 I think . What is a rear axle speed signal ? Is that different sensor than the ABS sensor ?












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