Question about 2001 BMW 3 Series
There are very few design flaws in the e46 (window regulators, sunroof guides). You just found one of them. BMW put dissimilar metals in the plug and pins in the tail light, and corrosion results. The ground connection corrodes long before the others. Cleaning it is a temporary fix. Replacing the tail light is a temporary fix. Adding a second ground connection is a permanent fix.
In the ground trace on the back of that tail light, you will find a tab for a spade fitting. Make an extra ground wire about 6" long with a spade fitting on one end and a loop on the other end that fits on one of the bolts that holds the tail light in. Do both tail lights while you are at it.
Actually, this was probably not so much a design flaw but rather a case where the plug and the tail light were made by two different suppliers who did not communicate their material selections to each other.
Posted on Mar 26, 2011
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jan 25, 2015 | Cars & Trucks
Dec 31, 2013 | 2008 Hummer H3 Alpha
May 26, 2012 | Dodge Durango Cars & Trucks
Feb 27, 2011 | 1991 Honda Accord
Feb 14, 2011 | 2004 Pontiac Grand Prix
Oct 28, 2010 | 2002 Mitsubishi Galant
Apr 16, 2010 | 2003 Hyundai Tiburon
Mar 06, 2009 | 1996 BMW 318
Oct 20, 2008 | 1991 Volvo 240
Jul 21, 2008 | Ford Mustang Cars & Trucks
228 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: