Question about BMW 525
Changed battery and still not holding charge, brake light on and ! light on
If the brake lights are really on (?) this represents about a 4-5 ampere drain that would drag down most batteries in less than a day. (Could be over 100 ampere/hours.)
I don't know your car but brake lights can be controlled by a switch operated by the pedal suspension or a pressure switch that monitors hydraulic pressure in the braking circuit.
If your brake lights are on, the switch that controls them has failed or a relay that is operated by the switch.
If the car seems sluggish or pulls when driven, it could be a failure in the ABS circuit since that is a high-demand (normally intermittant) load.
The best way to locate the problem would be to monitor the current drain with a meter in series from the battery (engine off, monitor the ground side) and pull and replace fuses one-by-one to see which circuit is the culprit.
Posted on Jul 02, 2008
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:
Apr 23, 2015 | 2003 BMW 525i
Dec 26, 2013 | BMW X5 Series Cars & Trucks
Nov 03, 2013 | 2003 BMW 525i
Jul 24, 2013 | BMW 525 Cars & Trucks
Aug 20, 2011 | 2001 BMW 5 Series
Jul 29, 2009 | 2007 BMW 525xi Sedan
Jun 14, 2009 | 2001 BMW 5 Series
Mar 31, 2009 | BMW 525 Cars & Trucks
546 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: