brakelight switch on pedal missing
Thread Starter
Newbie
Joined: Aug 2010
Posts: 1
Likes: 0
2003 ml 320
brakelight switch on pedal missing
i have a 2003 ml 320, dont have brakelights, replaced all bulbs still no light. Looked at my brake pedal, no brake light switch there. i called mb dealer, they told me it does not have a switch pedal, where is it? i also need to replace my brake pads and sensor for the front tires. Rotors has to be replaced too?
Newbie
Joined: May 2012
Posts: 2
Likes: 0
ml350
i have a 2003 ml 320, dont have brakelights, replaced all bulbs still no light. Looked at my brake pedal, no brake light switch there. i called mb dealer, they told me it does not have a switch pedal, where is it? i also need to replace my brake pads and sensor for the front tires. Rotors has to be replaced too?
its located on the brake master cylinder..if you look at the brake master cylinder just below the reservoir you'll see a wire attached to a switch,,and that is what your'e looking for,its called a high pressure brake switch,real easy to take off and replace,24mm spanner does the job just be careful not to cross thread the new switch when replacing...
regards steve
Newbie
Joined: Oct 2012
Posts: 4
Likes: 0
ML350
hi
its located on the brake master cylinder..if you look at the brake master cylinder just below the reservoir you'll see a wire attached to a switch,,and that is what your'e looking for,its called a high pressure brake switch,real easy to take off and replace,24mm spanner does the job just be careful not to cross thread the new switch when replacing...
regards steve
its located on the brake master cylinder..if you look at the brake master cylinder just below the reservoir you'll see a wire attached to a switch,,and that is what your'e looking for,its called a high pressure brake switch,real easy to take off and replace,24mm spanner does the job just be careful not to cross thread the new switch when replacing...
regards steve
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Newbie
Joined: Oct 2012
Posts: 4
Likes: 0
ML350
Thanks
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Whatever scanner you have on the way, hopefully it will read ABS/ESP codes. Here is a list of the codes. Post the code/s that you get and will try to help you.
Don't clear the codes until you post back.
Don't clear the codes until you post back.
Trending Topics
Newbie
Joined: May 2015
Posts: 1
Likes: 0
mercedes ml 163
brake light switch
yes its on the brake master cylinder cost £75 in uk,thanks to the man who knew,spot on cheers,even merc didn't have a clue
or any boby else on pc,all the best 
or any boby else on pc,all the best
Last edited by mercgee; May 27, 2015 at 09:40 AM. Reason: wording
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Newbie
Joined: May 2016
Posts: 1
Likes: 0
2003 ML350 4Matic
hi
its located on the brake master cylinder..if you look at the brake master cylinder just below the reservoir you'll see a wire attached to a switch,,and that is what your'e looking for,its called a high pressure brake switch,real easy to take off and replace,24mm spanner does the job just be careful not to cross thread the new switch when replacing...
regards steve
its located on the brake master cylinder..if you look at the brake master cylinder just below the reservoir you'll see a wire attached to a switch,,and that is what your'e looking for,its called a high pressure brake switch,real easy to take off and replace,24mm spanner does the job just be careful not to cross thread the new switch when replacing...
regards steve
Any image would help..
My brake lights are always on at the back and when I press the pedal they go off.
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
I can only assume that your brake lights do not come on. If that is the case, you must replace the Brake Booster with a used one or a new one.
Starting with model year 2003, Mercedes did away with the conventional Brake Light Sw. attached to the brake pedal and changed the wiring to make it possible to illuminate the brake lights.
There is nothing external on the Brake Booster that must be replaced (as others believe) to correct the problem, the Brake Booster must be replaced.
If you had a scanner that can read ABS codes, you will see that one or all of codes C1201-C1203 would be stored, see PDF below.
Starting with model year 2003, Mercedes did away with the conventional Brake Light Sw. attached to the brake pedal and changed the wiring to make it possible to illuminate the brake lights.
There is nothing external on the Brake Booster that must be replaced (as others believe) to correct the problem, the Brake Booster must be replaced.
If you had a scanner that can read ABS codes, you will see that one or all of codes C1201-C1203 would be stored, see PDF below.
Senior Member
Joined: Feb 2020
Posts: 331
Likes: 40
1998 CLK 320
I know I'm digging up an old thread, but I'm hoping someone is still subbed, because this is the best info I've found on the net.
I have a 2003 ML5000 and all of the brake lights work, but the shift lock doesn't work like it should (it must be overridden) and I don't see a brake switch at the pedal, but I do see the HP switch under the master cylinder.
Can anyone help with this?
Thanks!!
I have a 2003 ML5000 and all of the brake lights work, but the shift lock doesn't work like it should (it must be overridden) and I don't see a brake switch at the pedal, but I do see the HP switch under the master cylinder.
Can anyone help with this?
Thanks!!
Newbie
Joined: Jun 2024
Posts: 1
Likes: 0
ML500
I can only assume that your brake lights do not come on. If that is the case, you must replace the Brake Booster with a used one or a new one.
Starting with model year 2003, Mercedes did away with the conventional Brake Light Sw. attached to the brake pedal and changed the wiring to make it possible to illuminate the brake lights.
There is nothing external on the Brake Booster that must be replaced (as others believe) to correct the problem, the Brake Booster must be replaced.
If you had a scanner that can read ABS codes, you will see that one or all of codes C1201-C1203 would be stored, see PDF below.
Starting with model year 2003, Mercedes did away with the conventional Brake Light Sw. attached to the brake pedal and changed the wiring to make it possible to illuminate the brake lights.
There is nothing external on the Brake Booster that must be replaced (as others believe) to correct the problem, the Brake Booster must be replaced.
If you had a scanner that can read ABS codes, you will see that one or all of codes C1201-C1203 would be stored, see PDF below.
This is from an old post.... some problems just don'r go away.
Would you suggest replacing the Brake Booster and the High Pressure Brake Switch ?
The brake lights are not working.... appreciate any info.
D
