Check Engine Indicator Light Active And Fault Code P261029/P02FF85/P02FF02 Stored In Engine Control Unit (LI54.30-P-070482)

Publication date: 2020-06-18
Reference number: LI54.30-P-070482

CHECK ENGINE INDICATOR LIGHT ACTIVE AND FAULT CODE P261029/P02FF85/P02FF02 STORED IN ENGINE CONTROL UNIT

TECHNICAL SERVICE BULLETIN

Reference Number(s): LI54.30-P-070482 Version 3, Date of Issue: June 18, 2020

MERCEDES-BENZ:	Model series 205, 213, 238, 253, 257, 217, 222, 290 with code 464; Model series 463 with code J25
FUNCTION GROUP:	54.30 Instrument cluster, display instruments, hazard warning device
REASON FOR CHANGE:	Remedy edited

COMPLAINT

The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10).

CAUSE

The time in instrument cluster is implausible due to an internal reset.

REMEDY

If no other complaints exist then check for and perform any available software updates for the following control units:

Motor electronics (N3/10)
Powertrain control unit (N127)
Instrument cluster (A1)

If all three control units have the latest software installed and the complaint continues to occur then proceed with replacement of the instrument cluster (A1)

Should the complaint re-occur after the instrument cluster has been replaced then open a PTSS case with the following information:

Control units logs for the ME, PTCU, and IC
Initial quick test

CONTROL UNIT/FAULT CODE

Control unit	Fault code	Fault text
A1 - Instrument cluster (IC) (IC172) (G (463))	-	-
A1 - Instrument cluster (IC) (IC197) (G (463))	-	-
A1 - Instrument cluster (IC) (IC213)	-	-
A1 - Instrument cluster (IC) (IC222) (GLC (253), S (217), S (222), C (205))
N3/10 - Motor electronics 'MED41' for combustion engine 'M260/M264' (ME) (GLC (253), G (463), E (213), S (222), CLS (257), C (205), E (238))	P02FF85	Frequency counter 'Downtime of drivetrain' has a malfunction. There is a signal above the permissible limit value.
N3/10 - Motor electronics 'MED40' for combustion engine 'M274' (ME) (GLC (253), E (213), CLS (257), C (205), E (238))	P02FF85	Frequency counter 'Downtime of drivetrain' has a malfunction. There is a signal above the permissible limit value.
N3/10 - Motor electronics 'MED41' for combustion engine 'M260/M264' (ME) (GLC (253), G (463), E (213), S (222), CLS (257), C (205), E (238))	P261029	The engine off time has an implausible value. There is an invalid signal.
N3/10 - Motor electronics 'MED177' for combustion engine 'M276' (ME) (GLC (253), G (463), S (217), S (222), C (205))	P261029	The engine off time has an implausible value. There is an invalid signal.
N3/10 - Motor electronics 'MED41' for combustion engine 'M260/M264' (ME) (GLC (253), G (463), E (213), S (222), CLS (257), C (205), E (238))	P02FF02	Frequency counter 'Downtime of drivetrain' has a malfunction. There is a general signal fault.
N3/10 - Motor electronics 'MRG1' for combustion engine 'M256' (ME) (E (213), X 290 AMG, S (217), S (222), CLS (257), C (205), E (238))	P02FF85	The engine off time has an implausible value. There is a signal above the permissible limit value.
N3/10 - Motor electronics 'MRG1' for combustion engine 'M256' (ME) (E (213), X 290 AMG, S (217), S (222), CLS (257), C (205), E (238))	P02FF02	The engine off time has an implausible value. There is a general signal fault.
N3/10 - Motor electronics 'ME1778' for combustion engine 'M277' (ME) (G (463), S (217), S (222))	P261029	The engine off time has an implausible value. There is an invalid signal.
N3/10 - Motor electronics 'MED40' for combustion engine 'M274' (ME) (GLC (253), E (213), CLS (257), C (205), E (238))	P261029	The engine off time has an implausible value. There is an invalid signal.
N3/10 - Motor electronics 'ME-D177V6LA' for combustion engine 'M276 Abgasturbolader' (ME) (GLC (253), E (213), S (217), S (222), CLS (257), C (205), E (238))	P261029	The engine off time has an implausible value. There is an invalid signal.