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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 07-04-2014, 06:46 PM
mike34a mike34a is offline
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Location: Atlanta
Join Date: Jun 2014
Posts: 41
Mein Auto: 528i
left front high beam stays on, right turn signal blinks fast, right rear light error

2000 BMw 528i w. 170k.

When purchased the left front low beam was dead so got a new bulb. The fog lights are not on the car because someone backed into the lower end of the front clip at just the height to punch them out (wire and receptacles are there tucked up inside.

Also the right turn signal blinks really fast and the right rear tail light is showing an error in the dash but when we check the breaks and the right rear turn signal they seemed fine.

The guys at the auto parts store said this particular grouping of lighting problems is a symptom of some computer chip or processor going on the car.

Before we go there, it seems like a fuse or something might be the issue?
I'm going to go over the Bentley manual, but if it's a fuse shouldn't more be failing on the car?
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Old 07-04-2014, 08:41 PM
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johnstern johnstern is offline
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Location: Cape Neddick, Maine
Join Date: Mar 2007
Posts: 1,038
Mein Auto: 2000 BMW 528iT/5, S/C
There is a known problem with the RR light connections and wiring corroding due to fumes from the battery.

Make sure the vent tube for the battery is hooked up correctly.

Then inspect all connections and wiring in that light. Clean any corrosion and make sure the bulbs all have silver bases, not brass. The brass bulbs have a different resistance than the silver ones. The car is designed to use silver based bulbs. BTW-I've found that DeoxiT Dn5 is a great electrical cleaning spray that is an excellent corrosion dissolver that leaves a protective coating to protect against future corrosion. It also improves electrical connections. Just follow the directions on the can.
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Old 07-05-2014, 07:43 PM
occhis occhis is offline
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Location: Westford, PA
Join Date: Aug 2008
Posts: 701
Mein Auto: 1998 528iA
Rear error could be center brake light
Either you are part of the solution, or you are part of the problem.
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Old 07-05-2014, 09:23 PM
edjack edjack is offline
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Location: San Jose, CA
Join Date: May 2007
Posts: 9,425
Mein Auto: '97 540i 6 speed
Headlight staying on could indicate a fault in the light control module. Search the Best Links at the top of the page.

Have you directly observed that all the lights in the RR assembly work correctly?

Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

Last edited by edjack; 07-05-2014 at 09:26 PM.
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Old 07-06-2014, 06:25 AM
cn90 cn90 is offline
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Location: Omaha NE
Join Date: Mar 2006
Posts: 12,917
Mein Auto: 1998 528i 5-sp 140K+
HL staying on could be bad LCM.
Search forum for "Infineon chips".
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Old 07-06-2014, 11:10 AM
pleiades pleiades is offline
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Location: Oregon
Join Date: Jun 2010
Posts: 2,222
Mein Auto: '99 528i, M52TU w/stick
Originally Posted by cn90 View Post
HL staying on could be bad LCM.
Search forum for "Infineon chips".
Waste of time.

His model year is equipped with an LCM III, which doesn't use those chips.
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