ML 320 Turn Signal Switch causing accelerating issues
Thread Starter
Newbie
Joined: Jun 2015
Posts: 2
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Mercedes ML320
ML 320 Turn Signal Switch causing accelerating issues
Hi,
I own a 2002 ML320.
Yesterday my car started to act weird. Every time when left or right signals are on, my car will have some accelerating issues. It's acting like it's lacking gasoline, or like somebody is pumping the gas pedal. Also when I have the signals on and I'm applying the breaks, the clicking sound disappears.
Any ideas?
Thank You!
I own a 2002 ML320.
Yesterday my car started to act weird. Every time when left or right signals are on, my car will have some accelerating issues. It's acting like it's lacking gasoline, or like somebody is pumping the gas pedal. Also when I have the signals on and I'm applying the breaks, the clicking sound disappears.
Any ideas?
Thank You!
Super Member
Joined: May 2013
Posts: 504
Likes: 7
From: Harare, Zimbabwe
2003 ML55,2007 ML63
Have the car scanned for codes with a pro level scanner, then post the codes. It seems like you might be having an electrical fault related with the combination switch.
Welcome to the forum
Welcome to the forum
Super Member
Joined: May 2013
Posts: 504
Likes: 7
From: Harare, Zimbabwe
2003 ML55,2007 ML63
Somehow the right turn signal triggers your cruise control to work. You most probably have a short in the wiring to the combination switch or the combination switch is faulty.
Scan the car.
Scan the car.
Senior Member
Joined: Mar 2002
Posts: 282
Likes: 5
From: Brisbane, Australia
2002 ML320, 2003 A160
OP, if I were you, I would skip scanning for codes and go directly to disassembling the steering column surrounds to find the faulty wire. At this age, some of the insulation is flaking off.
The reason the clicking stops when you apply the brake is because the brake light switch deactivates the cruise control.
Getting the top cover off without breakage is pretty tricky. There is a tiny plastic pin sticking up at the back of the edge on the bottom cover. If you push in the plastic clip with a small screwdriver and lift the cover straight up, you might not snap it off.
The reason the clicking stops when you apply the brake is because the brake light switch deactivates the cruise control.
Getting the top cover off without breakage is pretty tricky. There is a tiny plastic pin sticking up at the back of the edge on the bottom cover. If you push in the plastic clip with a small screwdriver and lift the cover straight up, you might not snap it off.
Last edited by DrX; Jun 18, 2015 at 08:26 PM.
Junior Member
Joined: Feb 2013
Posts: 64
Likes: 12
From: West Michigan
2017 W166 GLE350, 2005 W163 ML350 Special Edition
Are you sure you're not actuating the cruise control? That's located on a stalk off the steering column...my daughter had to be taught that it wasn't the turn signal lever!
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MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
The logical thing to do is look at the right tail lamp and right mirror lamp while the stalk is in the right turn position.
A faulty bulb can cause this sort of problem.
A faulty bulb can cause this sort of problem.
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