Apr. 01 2017
Apr. 01 2017

Vehicle: 2016 BMW M5 (F10), V8-4.4L, Turbo (S63T), Automatic Transmission

Mileage: 14,800

Problem: Left headlight inoperative but scan tool shows a Front right outer fan “message”. No DTCs.

Details: The vehicle came into the shop because the left headlight was not working. The MIL was not on. When the tech tried to pull diagnostic trouble codes from the headlight control module, there were none but he did retrieve a issue description – “Front right outer fan”.

This model BMW is equipped with a cooling fan designed to cool down headlamp igniter module and headlamp control module. If cooling fan does not work, the control module turns-off the headlamp to prevent damage to other components

Confirmed Repair: The tech removed the bumper and opened headlamp assembly to have a clear view of the headlamp cooling fan. He tried to activate it with scan tool but it was not working. Next, the tech swapped the left and right fans and tried to activate it with the scan tool. The fan operated normally. He replaced right headlamp cooling fan and problem was repaired.

The ALLDATA Tech-Assist team fields cases like this every day. See how Tech-Assist can help your shop save time and money with on-call diagnostic support from ASE-certified Master Technicians. More Tech Tips 

Not an ALLDATA customer? For access to this valuable experience-based repair data and reliable OEM information, start a free trial today.

If you would like to read more articles like this one please subscribe to ALLDATA News.

Sign up for ALLDATA News