ESP ABS BAS FAULTS
Thread Starter
Newbie
Joined: Jan 2013
Posts: 1
Likes: 0
2004 CLK 500
ESP ABS BAS FAULTS
CAN SOMEONE PLEASE HELP!!!
I have a 2004 clk 500, I recently gave it a service, I put new front disks and pads, changed the brake wear sensors. Ever since then I get ABS BAS ESP malfunctions come up. The car seems to go in a limp mode, won't change gears, speedo stops working and steering goes heavy. Also the ABS and engine light comes on. CAN ANYONE HELP ME??
I have a 2004 clk 500, I recently gave it a service, I put new front disks and pads, changed the brake wear sensors. Ever since then I get ABS BAS ESP malfunctions come up. The car seems to go in a limp mode, won't change gears, speedo stops working and steering goes heavy. Also the ABS and engine light comes on. CAN ANYONE HELP ME??
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,200
Likes: 10
2004 CLK320
A few weeks ago, I received the same malfunctions (ABS, BAS, ESP) after an indie changed the front wheel bearings. Cruise control did not work but gear shifting was OK.
I brought them the MB wheel bearing kits. It turned out that when he installed the seal (ring), he put it inside out. This ring is magnetic on only one side and it works with the speed sensor.
I brought them the MB wheel bearing kits. It turned out that when he installed the seal (ring), he put it inside out. This ring is magnetic on only one side and it works with the speed sensor.
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,200
Likes: 10
2004 CLK320
A few weeks ago, I received the same malfunctions (ABS, BAS, ESP) after an indie changed the front wheel bearings. Cruise control did not work as well but gear shifting was OK.
It turned out that when he installed the seal (ring), he put it inside out. This seal is magnetic on only one side and it has to go in properly to work with the speed sensor.
It turned out that when he installed the seal (ring), he put it inside out. This seal is magnetic on only one side and it has to go in properly to work with the speed sensor.
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
Even if you broke a wheel speed sensor or its wiring harness, you shouldn't get limp mode on the transmission. Are all four wheels spinning freely? I have heard of situations where the rotors aren't the correct fit and cause interference problems. Also, check the battery voltage - a weak/dying battery can cause all sort of electrical gremlins.
Super Member
Joined: Feb 2009
Posts: 678
Likes: 2
From: Seattle
W209, E46 M3 (dead), S54 swapped E46 Touring
I also have had the same issue after replacing my rotors and pads a few weeks back. The only issue has been the lights on the dash and cruise control not working over 30mph. Could it be the brake wear sensors causing this?
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
No - the brake wear sensors don't have anything to do with those system, however, they do share a location on the wheel's wiring harness connector. It would be fairly difficult to damage the actual wheel speed sensor just working on the brakes (it's buried inside the hub), but it would be very easy to accidentally disconnect or damage the wiring.
Junior Member
Joined: Sep 2005
Posts: 60
Likes: 0
From: Toronto, Canada
CLK500
I had the same issue with my '04 CLK500 after having a spinout on an icy road - I was presented with the "visit workshop" alerts immediately after. Though a few days the alerts changed to read "see operator's manual"
Turning the steering wheel lock-to-lock a few times was able to reset these alerts for me.
Turning the steering wheel lock-to-lock a few times was able to reset these alerts for me.
Trending Topics
Senior Member
Joined: Aug 2002
Posts: 490
Likes: 1
From: Canada
05 CLK 500 cab
I had a voltage regulator failure a while ago. Lots of alerts like the OP's and the radio even stopped working as the battery voltage dropped, but I never got limp mode even when the voltage was insufficient to restart the engine.
Last edited by lars; Feb 25, 2013 at 03:34 PM.
MB World Stories
The Best of Mercedes & AMG
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
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Junior Member
Joined: Aug 2014
Posts: 59
Likes: 0
1999 E320
I need some help, I just replaced front wheel hub bearings and seal as well as front and rear brake pads.
After installation, the CLK320 gave me ABS/BAS errors as described from other folks.
The parts I bought were not MB original parts. Could that be the reason?
Also, I broke the rear brake pad sensor? does this sensor has anything to do with the ABS/BAS?
After installation, the CLK320 gave me ABS/BAS errors as described from other folks.
The parts I bought were not MB original parts. Could that be the reason?
Also, I broke the rear brake pad sensor? does this sensor has anything to do with the ABS/BAS?
Junior Member
Joined: Aug 2014
Posts: 59
Likes: 0
1999 E320
A few weeks ago, I received the same malfunctions (ABS, BAS, ESP) after an indie changed the front wheel bearings. Cruise control did not work as well but gear shifting was OK.
It turned out that when he installed the seal (ring), he put it inside out. This seal is magnetic on only one side and it has to go in properly to work with the speed sensor.
It turned out that when he installed the seal (ring), he put it inside out. This seal is magnetic on only one side and it has to go in properly to work with the speed sensor.
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,200
Likes: 10
2004 CLK320
Apparently, the indie installed the seal inside out. This seal has one magnetic side only and should go in only one way. The indie bought another seal and installed it properly the next day and no more malfunction.
I posted this expereince here and according to the members here, one of the possible cultprits was damaged or improperly installed wheel speed sensor.
Junior Member
Joined: Aug 2014
Posts: 59
Likes: 0
1999 E320
Does anyone has a picture of a schematic on how the seal should go? Just for confirmation.
Inside the seal there is an all around ring. I lost this ring. Could that be the reason why I'm having ABS/BAS/ESP errors?
Inside the seal there is an all around ring. I lost this ring. Could that be the reason why I'm having ABS/BAS/ESP errors?
MBWorld Fanatic!
Joined: Jan 2004
Posts: 2,200
Likes: 10
2004 CLK320
Check this link for the diagram. After the wheel hub, there is a wheel bearing and a hub seal.
http://www.oediscountparts.com/parts...agramCallOut=2
http://www.oediscountparts.com/parts...agramCallOut=2
Junior Member
Joined: Aug 2014
Posts: 59
Likes: 0
1999 E320
I replaced hub bearings and seal with OEM, car ran fine for 5 miles then same error came back. I'll have to connect it to Star and see which sensors showing errors. Its weird. During the drive ABS was being active when I brake I don't know why.
Newbie
Joined: Jun 2015
Posts: 1
Likes: 0
clk270
bas esp faults show up
I found fault caused by using non genuine wheel bearing seal, genuine item is magnetic on outer which works with speed sensor. after replacing seal and taking for short road test faults all cleared.
Super Member
Joined: Mar 2012
Posts: 535
Likes: 13
From: Franklin, MA
2006 CLK 350/. 2009 CLK 350/2005 Both White
To be honest with you guys my advice to people out there is to find a certified Mercedes mechanic not a dealer but a mechanic with the correct *diagnostics pay the $200 and have them pinpoint the exact problem because you can chase this and waste a lot of money I was very lucky I did not I was able to pinpoint it. My posting teaches you that even though I sent a module out and somebody said to times that it passed and pointed me in another direction they were wrong and I can be dangerous think about it I had a company test my module say that they repaired it two times which convince me it was fixed which caused me to start looking at other items and I would’ve started spending money left and right on Other things but something told me take it to a professional mechanic with the right diagnostic tools and let them tell me what it is and sure enough it was a module that was actually damaged by the people that were trying to repair it and they blatantly lied to me saying it was fixed telling me that there’s maybe something else wrong with my car. I will say that I called the credit card company up and them up and they are working on getting me a refund they admit that they made a mistake and they probably did break it while trying to repair it
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,254
Likes: 171
2002 CL500 to CL55 conversion
To be honest with you guys my advice to people out there is to find a certified Mercedes mechanic not a dealer but a mechanic with the correct *diagnostics pay the $200 and have them pinpoint the exact problem because you can chase this and waste a lot of money I was very lucky I did not I was able to pinpoint it. My posting teaches you that even though I sent a module out and somebody said to times that it passed and pointed me in another direction they were wrong and I can be dangerous think about it I had a company test my module say that they repaired it two times which convince me it was fixed which caused me to start looking at other items and I would’ve started spending money left and right on Other things but something told me take it to a professional mechanic with the right diagnostic tools and let them tell me what it is and sure enough it was a module that was actually damaged by the people that were trying to repair it and they blatantly lied to me saying it was fixed telling me that there’s maybe something else wrong with my car. I will say that I called the credit card company up and them up and they are working on getting me a refund they admit that they made a mistake and they probably did break it while trying to repair it
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,254
Likes: 171
2002 CL500 to CL55 conversion
thats funny I just did New tie rods, control arms. I took care to not damage the wheel sensors but now I’m getting abs errors and no power steering because it’s been disabled. Cleaned all 4 speed sensors, not luck
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,254
Likes: 171
2002 CL500 to CL55 conversion
wanted to report back. strangely enough, i had a rear wheel speed sensor go bad, when i was working on the front brakes and control arms....
a friend with a higher end scanner was able to confirm this for me
a friend with a higher end scanner was able to confirm this for me
