Electrical (including ignition)
Posted: Wed Dec 22, 2010 7:12 pm
Introduction / general
Good news! Not many electrical issues! Known -but luckily minor- stuff:
-failing ignition control module due to bad ground bolt
-bad engine ground strap
-corroded fuses
-interior lighting and reverse lights failing because of short circuit on reverse light switch wire near the gearstick
-battery drain as a result of glovebox light or trunk light not being switched off
A common BMW youngtimer issue is a broken hazard light switch. It may drain your battery and if it fails, your indicators won't work either (to save you a search). Gladly you can fix it, see here: http://www.bmwe21.net/forum/viewtopic.p ... 9&start=26
Fusebox layout: http://www.bmwe21.net/?page_id=130
Indicator relay issues: http://www.bmwe21.net/forum/viewtopic.php?f=61&t=22961
Good news! Not many electrical issues! Known -but luckily minor- stuff:
-failing ignition control module due to bad ground bolt
-bad engine ground strap
-corroded fuses
-interior lighting and reverse lights failing because of short circuit on reverse light switch wire near the gearstick
-battery drain as a result of glovebox light or trunk light not being switched off
A common BMW youngtimer issue is a broken hazard light switch. It may drain your battery and if it fails, your indicators won't work either (to save you a search). Gladly you can fix it, see here: http://www.bmwe21.net/forum/viewtopic.p ... 9&start=26
Fusebox layout: http://www.bmwe21.net/?page_id=130
Indicator relay issues: http://www.bmwe21.net/forum/viewtopic.php?f=61&t=22961