Question about 1990 BMW 5 Series
Based on your discription of the problem i would suspect the headlight dimmer control, which is also called the multifunction switch is defective
Posted on May 12, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
The marker lamps
The tail lamps
The license lamp
The front marker lamps are grounded through the turn filament of the respective front park/turn lamp. The front marker lamps light as a result.
The automatic lamp control function turns on the park lamps and the headlamps. This action occurs when the ambient light sensor determines that the exterior lamps should be turned ON based on the amount of available light. When the BCM grounds the park lamp relay, voltage is supplied directly to the park lamps, bypassing the turn/headlamp switch assembly. When this action occurs, the following conditions exist:
The automatic lamp control relay is grounded.
The headlamps turn ON. Refer to Headlights/Daytime Running Lights (DRL) Circuit Description .
The lamps turn OFF when the BCM does not ground the park lamp relay or the automatic lamp control relay. This action is caused by the following conditions:
The available light reaches a predetermined level.
The ignition switch is turned to the OFF position
Mar 31, 2016 | Pontiac Grand Am Cars & Trucks
Oct 25, 2015 | BMW Cars & Trucks
Mar 24, 2014 | 2002 Honda Civic
Jun 16, 2017 | Cars & Trucks
Mar 12, 2013 | 1990 BMW 3 Series
May 06, 2012 | 1997 Subaru Outback
Apr 01, 2009 | 2005 Subaru Outback
46 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: