Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW2008M5 (E60) V10-5.0L (S85)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - ACCESSORIES AND OPTIONAL EQUIPMENTENTERTAINMENT SYSTEM CONTROL MODULETECHNICAL SERVICE BULLETINSCUSTOMER INTERESTCOMMUNICATION/ENTERTAINMENT SYSTEMS - INOPERATIVE
2008 BMW M5 (E60) V10-5.0L (S85)
Communication/Entertainment Systems - Inoperative
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Communication/Entertainment Systems - Inoperative
SI B 65 27 08
Audio, Navigation, Monitors, Alarms, SRS
February 2009
Technical Service
This Service Information bulletin supersedes SI B65 27 08 dated January 2009.
[NEW] designates changes to this revision
SUBJECT
Entertainment and Communication Systems Are Inoperative
MODEL
E82, E88 *(1 Series)
E90, E91, E92, E93 *(3 Series)
E60, E61 *(5 Series)
E63, E64 *(6 Series)
E70 *(X5)
E71 *(X6)
*with option 6FL (USB Audio Interface)
Vehicles produced since September 2008
SITUATION
The entertainment and communication systems are inoperative.
In addition, the "SOS disabled" warning may be displayed.
CAUSE
The entertainment and communication systems are inoperative because of an open connector or a defective control unit in the MOST-bus.
CORRECTION
Verify the customer complaint.
Perform a short test and diagnosis using the BMW diagnostic equipment. Perform a MOST-bus ringbreak diagnosis. Follow any related test plan.
Jump the control modules on the MOST-bus, starting with the MULF2-High control module.
If jumping the MULF2-High control module restores the MOST-bus operation, replace it.
If jumping the MULF2-High control module does NOT restore the MOST-bus operation, jump the next control unit until the MOST-bus operation is restored.
[NEW] WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Disclaimer
Audio, Navigation, Monitors, Alarms, SRS
February 2009
Technical Service
This Service Information bulletin supersedes SI B65 27 08 dated January 2009.
[NEW] designates changes to this revision
SUBJECT
Entertainment and Communication Systems Are Inoperative
MODEL
E82, E88 *(1 Series)
E90, E91, E92, E93 *(3 Series)
E60, E61 *(5 Series)
E63, E64 *(6 Series)
E70 *(X5)
E71 *(X6)
*with option 6FL (USB Audio Interface)
Vehicles produced since September 2008
SITUATION
The entertainment and communication systems are inoperative.
In addition, the "SOS disabled" warning may be displayed.
CAUSE
The entertainment and communication systems are inoperative because of an open connector or a defective control unit in the MOST-bus.
CORRECTION
Verify the customer complaint.
Perform a short test and diagnosis using the BMW diagnostic equipment. Perform a MOST-bus ringbreak diagnosis. Follow any related test plan.
Jump the control modules on the MOST-bus, starting with the MULF2-High control module.
If jumping the MULF2-High control module restores the MOST-bus operation, replace it.
If jumping the MULF2-High control module does NOT restore the MOST-bus operation, jump the next control unit until the MOST-bus operation is restored.
[NEW] WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Disclaimer
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.