Audio/COMAND Display: Sporadic Failures Of Central Display (LI82.85-P-059083)
Publication date: 2018-01-25Reference number: LI82.85-P-059083
AUDIO/COMAND DISPLAY: SPORADIC FAILURES OF CENTRAL DISPLAY
TECHNICAL SERVICE BULLETIN
Reference Number(s): LI82.85-P-059083 Version 4, Date of Issue:
January 25, 2018
| MERCEDES-BENZ: | NTG4.5: Model 207, 212, 218 with code 088 or code 803 or code 804; Model 204.0/2/3 with code 802; Model 166, 117, 172, 176, 204, 231, 246 with code 803 or code 804; Model 463 with code XZ2 or XZ3 |
| FUNCTION GROUP: | 82.85 Navigation and Communication system (CNS, ICS, COMAND, FleetBoard) |
| REASON FOR CHANGE: | Remedy adapted |
Complaint
Sporadic failures of the Audio/COMAND display control unit (A40/8).
CAUSE
Possibly various causes.
REMEDY
- Perform guided tests for relevant fault codes.
- Check all connectors on the head unit and central display.
- Check wiring harness (in particular the LVDS line and the telematics CAN lines) between the COMAND (A40/3) /Audio20 (A2) and Audio/COMAND display (A40/8) control units for chafing and crushing.
- Use XENTRY Diagnostics to check whether the software of the COMAND (A40/3) /Audio20 (A2) and Audio/COMAND display (A40/8) control units is up to date.
Control unit/fault code
CONTROL UNIT/FAULT CODE
| Control unit | Fault code | Fault text |
|---|---|---|
| A2 - A40/3 - Audio or COMAND (Audio) (HU45) | D026 | Telematics CAN bus OFF fault |
Operation numbers/damage codes
OPERATION NUMBERS/DAMAGE CODES
| Op. no. | Operation text | Time | Damage code | Note |
|---|---|---|---|---|
| 54-0650 | MAINTAIN BATTERY VOLTAGE (FOR TESTING AND DIAGNOSIS WORK) | 82368 50 | ||
| 54-1011 | PERFORM QUICK TEST | 82368 50 | ||
| 82-9905 | PERFORM SOFTWARE UPDATE FOR RADIO/COMAND | 82368 50 | ||
| 54-0991 | CONTROL UNIT .......................... INSTALL SOFTWARE (AFTER QUICK TEST) | 82368 50 |