mrnme

I had for a while BAS ESP on and off with no problem with engine running normal. but couple of days ago car start running sluggish with no acceleration. I checked the code and it was P0120. I changed the Throttle position sensor by firewall and also MAF sensor with no change. I even do the rest steps several time with no success. Any suggestion will be appreciated. Thanks.

mrnme

I have this problem. resetting does not work. does Mercedes service center has to program the new TPS? please advise. Thanks.

Maj. Dundee

Why did you replace the EGR when you do not have a code for it?

There are two codes for P0120. One for the Throttle Valve and one for the Throttle Potentiometer.

You need a scanner to read the proper codes.

mrnme

Thank you for replying to my question. i did not replace EGR. I replaced throttle Position Sensor. my question is does Benze service center to reporgram it. I already did the reset proceure but did not work. please advise. thanks.

Maj. Dundee

Sorry for the mistake.

Try the Adjust & Relearn PDFs.

mrnme

thanks again for this important information. i'll keep it in my file definitely. I suspected the kickdown switch under gas pedals. removed it and test it. It failed. i pressed it multiple times, it passed the OHM meter test. I also removed the batteries connections for couple of days. Now it is working with no problem and I drove it for couple of blocks with no problem. I know it will fail again. i think it has rust inside. I will order the kickdown switch which is $28 from fcpeurop including tax and shipping cost.

Maj. Dundee

Hope it works for you.