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2000 Mercedes-Benz ML320

Question: Limp Home Mode, ABS, Brake light, Speedometer failing

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vegasgrl, Potwin, KS, October 26, 2011, 23:09
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 Rookie

Would there be a reason that after being towed my SUV goes into limp mode with the brake light and abs lights coming on?I was away when my HOA towed it and I'm unsure how they got it on the flatbed since the keys were with me.....

After I picked up my car, it was running a bit rough but seemed to improve before I got home. It was probably driven under 100 miles (in a week)before the lights came on, speedometer died and it went into limphome mode. It would temporarily reset after turning off the car and seemed intermittent. Other strange things that started about the same time: A/C wasn't cooling, rear brake light went out, rear hatch lock has failed.
Limp Mode is triggered all the time now and it has started throwing p0720 p0500 is it true those could be part of the limp mode? I'm at a loss! Local mechanic told me to drive it until I could better decifer so I wouldn't be throwing money at it?? Any help or advice would be greatly appreciated. Thanks

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  • Answer #1

    dandd October 27, 2011, 14:02
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     Master

    A P0720 is a transmission code for the output speed senor not working correctly so possibly the tow company did not tow your car correctly. I would complain ASAP. And this senor WILL cause the symptoms that you mention. P0500 is also the vehicle speed sensor, same type of code problem.

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