olebenz

When using the kickdown on the accelerator pedal a CEL is immediately generated and car is in limp mode until cleared.

Codes under stability management are one that says. One or more signals from the control unit combustion engine via CAN bus is implausible
Another code which relates to steering angle calibration needing to be done.

Another one is low pressure fuel circuit sensor is implausible. It has a new fuel pump. This sensor in question is on the filter side. Is it really bad or does some calibration need to be done with the scanner?

And also have a reman alternator installed in 2023. All lights pulse randomly when the vehicle is running. Voltage is correct but guessing this reman is no good. Lifetime warranty, but the voltage regulator is usually what causes pulsing.

Does anyone know what sensor is located on the back left cylinder head just above the crankshaft position sensor? Believe the O-ring has perished.

JettaRed

iTrader: (1)

First, get a Mercedes-specific scanner and scan all the controllers for codes. Then note if they are current or stored. Erase them and see which ones return. Come back here and tell us what you found.

olebenz

Here are the following stored codes that have come back after clearing.

FSCU N118 code 254000
ESP N30/4 code 6265 & 7266

That sensor in question under the vacuum pump near the crank sensor appears to be the coolant temp sensor.

olebenz

Replaced the alternator and the pulsing lights issue has been resolved. Also has actually appeared to have smoothened out the idle.

olebenz

Alrighty well found the problem with the limp mode. Anytime you use the kickdown it would throw the ESP light and go into limp mode. It finally threw a code for the accelerator pedal.