ESP, BAS, PRE-SAFE - Fault message in instrument cluster
Topic number L154.18-P-057974
Version 5
Design group 54.18 Cable harnesses
Date 10-26-2015
Validity Model 117, 156, 176, 246 with engine 270, 607, 651
Reason for change Validity of remedy adjusted

Reason for block

Complaint:

ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist and ESP® trailer stabilization are unavailable due to a
malfunction. Also the adaptive brake lights, Adaptive Brake Assist and/or ATTENTION ASSIST may have failed or be
deactivated. The brake system continues to operate with normal effectiveness. The support functions listed may have
failed, but are available again after an ignition off/on cycle.

One or more of the faults relating to the accelerator pedal (B37) listed under ‘Control unit / Fault code’ are stored in
the engine control unit. Consequential faults may be stored in the ESP; see also under ‘Control unit / Fault code’.

Cause:
The fault entry could have been caused by occasional transition resistance at contacts.

Remedy:

If all the test steps stored in Xentry Diagnostics have been performed and no component faults were found, the follo-
wing work must be carried out:

- Check contacts of accelerator pedal plug connector (B37) for widening/damage! Make sure that testing is performed
using the correct contact spring (here MLK1.2) from the electrics case, otherwise the contact could be damaged! If da-
mage/widening is found, the female contacts must be replaced.

- Disconnect engine control unit "plug connector - F and M" once and reconnect.

Engine 651 only:
If the fault occurs again, or if this is a reoccurrence of the same problem, the relevant female contacts of the engine

control unit connector "F" must be replaced. The repair may only be performed by specialist personnel and the in-
structions in the attachment must be followed!

Notes:

Contact spray must never be used on contacts on the engine wiring harness. The use of contact cleaners can cause
consequential damage!

Please do not replace any components!

Attachments

File Description
651,270_117,176,246 Tausch Kontaktbuchse_german. _|Instructions: Replace female contact - German
pdf

651,270_117,176,246_Change female contact_english. _|Instructions: Replace female contact - English
pdf

10-26-2015 6:48 PM PLUBONS
© Copyright Daimler AG Page 1/6

Symptoms
Power generation / Engine management / Engine management indicator lamp / Engine diagnosis / lit
Chassis/suspension / Brake system / Brakes/traction regulation system / Brake assist system BAS / Display messa-
ge / Brake assist - not available
Chassis/suspension / Brake system / Brakes/traction regulation system / Starting-off aid / Nonfunctional
Chassis/suspension / Brake system / Brakes/traction regulation system / Brake assist system BAS / Indicator lamp /
Goes on
Chassis/suspension / Brake system / Brakes/traction regulation system / Electronic Stability Program ESP / Indicator
lamp / Goes on
Chassis/suspension / Brake system / Brakes/traction regulation system / Electronic Stability Program ESP / Display
message / Display text, yellow/white / Unavailable - ESP - See Operator's Man.
Communication/information / Warning and control system / COLLISION PREVENTION ASSIST / Warning system
nonfunctional
Control unit/fault code
Control unit Fault code Fault text
N3/10 - Motor electronics P213800 The values from the position sensors of the accelerator pedal are
‘MED40' for combustion engi- implausible relative to each other. _
ne 'M274' (ME)
N3/9 - Motor electronics P022664 Fault of function monitoring of electronic accelerator There is an
‘CRR1' for combustion engine implausible signal.
‘OM607' (CDI)
N30/4 - Electronic stability pro- |} CO3A400 The CAN message from control unit ‘Engine’ is faulty.
gram (ESP®) (ESP9MFA)
N3/9 - Motor electronics P213862 The values from the position sensors of the accelerator pedal are
‘CDID3' for combustion engine implausible relative to each other. The signal comparison is faul-
‘OM651' (CDI) (CRD3) ty.
N128 - Electric parking brake |{U010000 No CAN message was received from control unit ‘Engine’.
(EFB) (EPKB166)
N3/9 - Motor electronics P212714 Position sensor 2 for the accelerator pedal has a short circuit to
‘CDID3' for combustion engine ground. There is a short circuit to ground or an open circuit.
‘OM651' (CDI) (CRD3)
Parts
Part number ES1|/ES2 |Designation Quantity |Note EPC
A 002 982 58 26 Female contact MLK1.2S ----- "B37 - Accelerator pedal" Xx
0.5mm?
A 000 982 30 26 Female contact MLK1.2S ----- "B37 - Accelerator pedal" X
0.75mm?
A 001 545 50 80 Single-wire seal "B37 - Accelerator pedal" x
W00058913990 0 Wiring harness repair kit, basic To be ordered as special tool!
W22058904990 0 Wiring harness repair kit, sup- To be ordered as special tool!
plement for passenger cars
W22058901994 0 Wire stripper To be ordered as special tool!
10-26-2015 6:48 PM PLUBONS
© Copyright Daimler AG Page 2/6

A021 545 01 26

Female contact MCP1.2 ------

For engine control unit connector M/F] X

0.5-0.75 mm? - See attachment
A021 545 05 26 Female contact MCP1.2 ------ For engine control unit connector M/F} X
0.25-0.35 mm? - See attachment
A 007 989 07 85 Fabric tape See attachment x
A 004 997 98 90 Cable tie For engine control unit connector M/F] X

- See attachment

W22058901998 4

Crimping set MLK 1.2 ELA

Special tool "B37 - Accelerator pedal"

Operation numbers/damage codes

Op. no. Operation text Time Damage Note
code
54581 73 |Diesel engine control unit
598BF 74 |Connectoriline F for gasoline engine
control unit
59202 74 |Connector/line for accelerator pedal
sensor
598DF 74 |Connectoriline F for diesel engine
control unit
WIS-References
Document number Title Note Allocation
AROO.19-P-0100A Wiring harness general re- Remedy
pair methods
ARO0.19-P-0120A Remove contacts from Remedy
connectors, couplings
WS00.19-P-0002B 220 589 02 99 00 Wiring Remedy
harness repair kit
WS00.19-P-0006B 220 589 04 99 00 Wiring Remedy
harness repair kit, supple-
ment for passenger cars

Validity

Vehicle
117.301
117.303
117.312
117.342
117.343
117.344
117.346
156.942
156.943

Engine