# BMW electrical problems

**URL:** <https://forums.speedlife.net/t/bmw-electrical-problems/6460>\
**Category:** NYSpeed Automotive\
**Created:** [January 5, 2006, 3:47pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460 "2006-01-05T15:47:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Juan](https://avatars.discourse-cdn.com/v4/letter/j/a698b9/32.png) [@Juan](https://forums.speedlife.net/u/Juan)\
**Post date:** [January 5, 2006, 3:47pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460/1 "2006-01-05T15:47:17Z")

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Sometimes the tachometer, fuel and temp gauges doesn’t work. Also sporadically the brake lights stay on without touching the brake pedal on my 325i

What this could be? any ideas?

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**Author:** ![mike125k](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mike125k/32/7282_2.png) [@mike125k](https://forums.speedlife.net/u/mike125k)\
**Post date:** [January 5, 2006, 3:47pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460/2 "2006-01-05T15:47:56Z")

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it might help if youre a little more specific than “325i”, E30, E36, E46???

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**Author:** ![Juan](https://avatars.discourse-cdn.com/v4/letter/j/a698b9/32.png) [@Juan](https://forums.speedlife.net/u/Juan)\
**Post date:** [January 5, 2006, 3:51pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460/3 "2006-01-05T15:51:02Z")

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I’m new to the German world…E30

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**Author:** ![mike125k](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mike125k/32/7282_2.png) [@mike125k](https://forums.speedlife.net/u/mike125k)\
**Post date:** [January 5, 2006, 3:58pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460/4 "2006-01-05T15:58:42Z")

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ok that helps.

1. instrument panel is dead because the SI batteries are starting to die. you have to remove the gauge cluster and replace the battery. very common E30 problem.

2. check those grounding metal rods in the rear tail light housings, make sure they are making good contact and that none have come out of their little grooves.

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<div class="post-metadata">

**Author:** ![Juan](https://avatars.discourse-cdn.com/v4/letter/j/a698b9/32.png) [@Juan](https://forums.speedlife.net/u/Juan)\
**Post date:** [January 5, 2006, 4:09pm UTC](https://forums.speedlife.net/t/bmw-electrical-problems/6460/5 "2006-01-05T16:09:24Z")

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hmm SI batteries??

I found this, thanks for your help…

[http://www.beckerelectronics.com/SIboard/siboard.html](http://www.beckerelectronics.com/SIboard/siboard.html)