NHTSA ID Number: 11026596
Manufacturer Communication Number: LI54.18-P-067550
TSB/Document Date: 2025-12-12
Summary
Complaint
ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights, Lane Keeping Assist, Blind Spot Assist, Adaptive Brake Assist, and/or ATTENTION ASSIST may be temporarily unavailable. The brake system continues to operate with normal effectiveness. The support functions listed may be unavailable, but are available again after an ignition off/on cycle.
One or more of the faults listed under 'Control unit/ fault code' for the accelerator pedal (B37) is logged in the PTCU control unit (N127). Consequential faults may have been logged in the ESP control unit.
Cause
Resistance at accelerator pedal contacts.
Remedy
The remedy refers only to the model series listed and is not compatible with other published TIPS documents for other model series.
If all the test steps stored in XENTRY Diagnosis have been performed and no component faults were found, the following work must be carried out:
- Replace the connector/ feed line to the accelerator pedal sensor (B37) using the wiring harness repair kit (see parts table).
Please ensure that the twisted lines are untwisted as little as possible.
Please do not replace any other components (e.g. accelerator pedal sensor). p>
Reoccurrence of the problem:
If the fault occurs again, or if this is a reoccurrence of the same problem, please make sure that the line connectors between the repair wiring harness and the interior wiring harness are fitted correctly and that the solder has dispersed evenly. In case of doubt, please repeat the repair. If the problem reoccurs after the second repair attempt, please create a TIPS case with informative photos of all line connectors. p>
Information on alternative to repair wiring harness:
If there should be any supply bottlenecks with regard to the repair wiring harness, then the contact sockets on the accelerator pedal sensor can be replaced as an alternative. p>
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TSB/Document ID: LI54.18-P-067550
Replacement Service Bulletin Number:
MFR Communication Date: 2025-12-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
ESP, BAS, PRE-SAFE, Active Brake Assist, Lane Keeping Assist, Blind Spot Assist Inoperative Messages in Instrument Cluster
Topic number
LI54.18-P-067550
Version
8
Function group
54.18 - Cable harnesses
Date
12/5/25
Validity
167 (GLE & GLS), 213, 238
Reason for change
Updating to include 167
Complaint
ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights, Lane Keeping Assist, Blind Spot Assist, Adaptive Brake Assist, and/or ATTENTION ASSIST may be temporarily unavailable. The brake system continues to operate with normal effectiveness. The support functions listed may be unavailable, but are available again after an ignition off/on cycle.One or more of the faults listed under 'Control unit/
fault code' for the accelerator pedal (B37) is logged in the PTCU control unit (N127). Consequential faults may have
been logged in the ESP control unit.
Cause
Resistance at accelerator pedal contacts.
Remedy
The remedy refers only to the model series listed and is not compatible with other published TIPS documents for
other model series.If all the test steps stored in XENTRY Diagnosis have been performed and no component
faults were found, the following work must be carried out:- Replace the connector/ feed line to the accelerator
pedal sensor (B37) using the wiring harness repair kit (see parts table).Please ensure that the twisted lines
are untwisted as little as possible.Please do not replace any other components (e.g. accelerator pedal sensor).
Reoccurrence of the problem:If the fault occurs again, or if this is a reoccurrence of the same problem, please make sure that the line connectors between the repair wiring harness and the interior wiring harness
are fitted correctly and that the solder has dispersed evenly. In case of doubt, please repeat the repair. If the problem reoccurs after the second repair attempt, please create a TIPS case with informative photos of all line connectors.
Information on alternative to repair wiring harness:If there should be any supply bottlenecks with regard to the repair wiring harness, then the contact sockets on the accelerator pedal sensor can be replaced as an alternative.
WIS-References
Document number
Title
AR00.19-P-0100A
Wiring harness general repair methods
08.12.2025 18:34
© Copyright Mercedes-Benz
AG
Note
ALLENDC
Page 1 / 4
AR00.19-P-0120A
Remove contacts from connectors,
couplings
WS00.19-P-0002B
220 589 02 99 00 Wiring harness repair kit
WS00.19-P-0006B
220 589 04 99 00 Wiring harness repair kit, supplement for passenger
cars
Disclaimer
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
Symptoms
Power generation > Engine management > Indicator lamp > Engine diagnosis > lit
Chassis/suspension > Brake system > Brakes/traction regulation system > Brake assist system BAS > Display message > Brake assist - not available
Chassis/suspension > Brake system > Brakes/traction regulation system > Starting-off aid > Malfunction
Chassis/suspension > Brake system > Brakes/traction regulation system > Brake assist system BAS > Indicator lamp
> Goes on
Communication/information > Assistance and warning systems > Brake Assist > Malfunction
Chassis/suspension > Brake system > Brakes/traction regulation system > Electronic Stability Program (ESP) > Display message
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
A2135401091
Accelerator pedal sensor
wiring harness repair
1
X
A0009829510
Cable connector
6
X
W220589019925
Release tool MLK 1.2
1
Alternative: Release tool MLK 1.2
for removing the old contact sockets
from the plug to the accelerator pedal
sensor B37.
A0215451726
Contact socket MCP 1.2
6
Alternative: New contact socket on
plug for accelerator pedal sensor
B37.
X
A0005456880
6
Alternative
X
W220589049910
Crimping set MCP 1.2 ELA
1
Alternative
Control unit/fault code
Control unit
08.12.2025 18:34
© Copyright Mercedes-Benz AG
Fault text
ALLENDC
Page 2 / 4
N30/4 - Electronic stability program (ESP®)
(ESP213_MOPF)
U0401FC - Implausible data were received from control
unit 'combustion engine'. _
U0442E3 - Implausible data were received from control
unit 'Drivetrain'. _
N30/4 - Electronic stability program (ESP®) (ESP213)
U040181 - Implausible data were received from control
unit 'combustion engine'. Incorrect data were received.
U0416FA - Implausible data were received from control
unit 'Traction system'. _
U0401EC - Implausible data were received from control
unit 'combustion engine'. _
U0401FA - Implausible data were received from control
unit 'combustion engine'. _
U0401FC - Implausible data were received from control
unit 'combustion engine'. _
N30/4 - Electronic stability program (ESP®) (ESP213)
U040181 - Implausible data were received from control
unit 'combustion engine'. Incorrect data were received.
U0416FA - Implausible data were received from control
unit 'Traction system'. _
U0401EC - Implausible data were received from control
unit 'combustion engine'. _
U0401FA - Implausible data were received from control
unit 'combustion engine'. _
U0401FC - Implausible data were received from control
unit 'combustion engine'. _
N30/4 - Electronic stability program (ESP®) (ESP213)
U040181 - Implausible data were received from control
unit 'combustion engine'. Incorrect data were received.
U0416FA - Implausible data were received from control
unit 'Traction system'. _
U0401EC - Implausible data were received from control
unit 'combustion engine'. _
U0401FA - Implausible data were received from control
unit 'combustion engine'. _
U0401FC - Implausible data were received from control
unit 'combustion engine'. _
N3/10 - Motor electronics 'MED40' for combustion engine P2138F1 - The values from the position sensors of the
'M274' (ME) (MED40)
accelerator pedal are implausible relative to each other. _
N3/10 - Motor electronics 'MED40' for combustion engine P2138F1 - The values from the position sensors of the
'M274' (ME) (MED40)
accelerator pedal are implausible relative to each other. _
N3/10 - Motor electronics 'MED40' for combustion engine P2138F1 - The values from the position sensors of the
'M274' (ME) (MED40)
accelerator pedal are implausible relative to each other. _
N127 - Control unit "Drivetrain" (PTCU) (CPC_NG)
08.12.2025 18:34
© Copyright Mercedes-Benz AG
P213800 - The values from the position sensors of the accelerator pedal are implausible relative to each other. _
ALLENDC
Page 3 / 4
N127 - Control unit "Drivetrain" (PTCU) (CPC_NG)
P213800 - The values from the position sensors of the accelerator pedal are implausible relative to each other. _
N127 - Control unit "Drivetrain" (PTCU) (CPC_NG)
P213800 - The values from the position sensors of the accelerator pedal are implausible relative to each other. _
B37n1 - Haptic accelerator pedal module (HFPM)
(FFAP205)
U044229 - Implausible data were received from control
unit 'Drivetrain'. There is an invalid signal.
B37n1 - Haptic accelerator pedal module (HFPM)
(FFAP205)
U044229 - Implausible data were received from control
unit 'Drivetrain'. There is an invalid signal.
Operation numbers/damage codes
Op. no.
Operation text
08.12.2025 18:34
© Copyright Mercedes-Benz AG
Time
ALLENDC
Damage
code
Note
5920274
Connector/line for accelerator pedal
sensor
Page 4 / 4
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