Gritinyourcrawl

Hi- Just bought an immaculately cared for 2014 ml350 a month ago. Engine lightbcame on yesterday, threw codes p2136, p2137, indicating throttle/pedal position sensor. Can a DIY'er change this and calibrate the sensor without taking to a dealership?
thanks

Etienne Lau

It's an easy change, just get a new pedal from the dealer, unbolt from floor, unplug from harness, and then reverse the process.