2010 GLK350 ESP fail
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Newbie
Joined: Nov 2018
Posts: 12
Likes: 1
2010 GLK350
2010 GLK350 ESP fail
Hi there, love this site and everyone who participates!
we had a big snow and i pushed my 2010 GLK350 pretty hard to get through it. had dash ABS fail lights afterwards and suspected i may have damaged a wheel speed sensor. decided to give it a bit of time in case there was some ice in there or something and, indeed, the problem went away. did not have a scanner. that was three months ago.
now the engine lights come on and i get ABS and ESP failure dash warning messages. the exclamation triangle comes on as well but will go off if i disable ESP. i do have a BlueDriver scanner now which provides the following:
C2001
NOT PRESENT
The supply voltage of control unit "N30/4 (Electronic Stability Program control
unit)" is too high (overvoltage).
C2000
NOT PRESENT
The supply voltage of control unit "N30/4 (Electronic Stability Program control
unit)" is too low (undervoltage).
C1945
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
C1944
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
C1001
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
P0856
MIL/PRESENT
Traction Control Input Signal
my question is, could this still be a wheel sensor issue? i would rather not have to take each wheel off to check but will get a probe camera if its possible this is the problem and am able to see with such a device.
or, am i looking at a replacement of the N30/4 unit?
any insight appreciated!
we had a big snow and i pushed my 2010 GLK350 pretty hard to get through it. had dash ABS fail lights afterwards and suspected i may have damaged a wheel speed sensor. decided to give it a bit of time in case there was some ice in there or something and, indeed, the problem went away. did not have a scanner. that was three months ago.
now the engine lights come on and i get ABS and ESP failure dash warning messages. the exclamation triangle comes on as well but will go off if i disable ESP. i do have a BlueDriver scanner now which provides the following:
C2001
NOT PRESENT
The supply voltage of control unit "N30/4 (Electronic Stability Program control
unit)" is too high (overvoltage).
C2000
NOT PRESENT
The supply voltage of control unit "N30/4 (Electronic Stability Program control
unit)" is too low (undervoltage).
C1945
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
C1944
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
C1001
NOT PRESENT
There is an internal fault in component "N30/4 (Electronic Stability Program
control unit)".
P0856
MIL/PRESENT
Traction Control Input Signal
my question is, could this still be a wheel sensor issue? i would rather not have to take each wheel off to check but will get a probe camera if its possible this is the problem and am able to see with such a device.
or, am i looking at a replacement of the N30/4 unit?
any insight appreciated!
Senior Member
Joined: Feb 2020
Posts: 491
Likes: 150
From: Lac Ste. Marie, Quebec
2006 Alfa Romeo Brera, 2010 GLK350, 2018 BMW 640i GT, 1997 Subaru SVX, 2012 Moto Guzzi Norge GT8V
I have a very similar issue which started a couple of days ago. A bunch of codes and warnings. C1132, C3270, P1425, U140D, U140C, I had about a dozen yesterday. It even went into limp mode a couple of times. I have a C1132 RR sensor code. I have a sensor to install tomorrow to see if it works.
I replaced the battery because it failed a load test but that made no difference. I also cleaned the ABS Module connecters thoroughly which also did not help.
I replaced the battery because it failed a load test but that made no difference. I also cleaned the ABS Module connecters thoroughly which also did not help.
Last edited by Silver Shadow; Mar 23, 2023 at 07:05 PM.
MBWorld Fanatic!
Joined: Sep 2013
Posts: 2,349
Likes: 696
2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
MBWorld Fanatic!
Joined: Sep 2013
Posts: 2,349
Likes: 696
2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
May be the ABS control unit. I hesitate to tell you to change it because chasing phantoms can be frustrating and expensive. I’m not an MB tech. You have a number of codes, some of which may not be related.
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Senior Member
Joined: Feb 2020
Posts: 491
Likes: 150
From: Lac Ste. Marie, Quebec
2006 Alfa Romeo Brera, 2010 GLK350, 2018 BMW 640i GT, 1997 Subaru SVX, 2012 Moto Guzzi Norge GT8V
I fixed mine today. 6 hours with a few headaches. The problem was the ABS tone/reluctor ring. They aren't sold separately anymore for the GLK but I cross referenced the part number and got the right one on Amazon for $20 CAD. Part number is 2303570182.
MBWorld God!
Joined: Dec 2019
Posts: 32,532
Likes: 6,354
It is always the most simple things, the ones that you least expect that fails causing issues, glad you figured it out, thanks for your update and the part number.
