After several months of no ASR light with Limp Mode, the monster resurfaced its head this week.

1994 E420 with ASR

Here is my new experience:
Got ASR light with LM. Restart and went away. Several times this week. Once a day, sometimes twice or 3 times a day.

I read and reset the codes at least 3 times:

ABS/ASR Module - Pin 6: 30 Can data bus to N4/1 interrupted (this one from previous experience shows up whenever there is a code that triggers ASR/LM)

EA/CC/ISC Module - Pin 7 : 14 Close Throttle Position Switch (S29/3) (on top of accelerator pedal)

Diagnostic Module - Pin 19 : 6 Idle Speed Control Inoperative (this one from previous experience shows up whenever there is a code that triggers ASR/LM)

Fortunately after years of knowledge accumulated in this forum, as well as personal experience, I have been able to fix, troubleshoot and help others solve many ASR/Limp Mode issues.

I am convinced it is an intermittent issue with the switch on the accelerator (S29/3). The codes are consistent.

Questions:
1.- Is there a test for the switch, without having to be a contorsionist?

2.- I could not find it in Peachparts, where can I find it (not dealer, please)

3.- Have anyone replaced this switch, and level of difficulty? (I am 6'2", and getting down there is no easy task for me. I remember the struggle when I replaced the switch on the brake pedal (S9/1) years ago fixing another ASR issue!!)

Thanks

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1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
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