3rd brake light flashes on at will, park lights on

[Mark]

I have a 528iT and my third beake light flashed off and on random. And my driving lights dont come on, But the turn siginals work??

[Bmw540san]

the search and maybe the guys who know more about it than me will chime in.



1998 BMW 540i 6 speed
Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
Staggered 18" style 32 OEM wheels
3.15 open differential
Remus exhaust
AFE CAI with improved heat shield
Z3 shifter
VDO oil pressure and temperature gauges in place of headlight/fog switches
Powder coated valve covers-satin black
CDV delete
Debadged
AEA DRL module (aftermarket daytime running lights)

1997 BMW 528iA
Alpine white, premium package, prod. date 04/97, single VANOS
Staggered 17" style 32 OEM wheels
Debadged
AEA DRL module
Custom made sun blinds for rear seating area

2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

Garage aids:
Direct Lift Pro Park 8
Campbell Hausfeld 28 gallon oil lubricated air compressor
Newair ACP-1400H portable air conditioner and heater
Auto Enginuity scan tool with BMW enhanced option
Actron 9135 scan tool-for quick readouts

[JimLev]

check the driving lights (U mean fog lamps right?) to make sure they aren't burned out. You didn't mention if you got a message in the speedo cluster saying they were bad.
I would also disconnect both battery cables, then short them together for 5 min with the key in the run position to drain all the charge from all of the modules. Let the car sit with access to the battery for 16+ min until all modules go to sleep B4 you disconnect the battery.
Is it just the 3rd brake light that flashes? Are your sure the other brake lights are not flashing too? If they are, it could be a bad brake light switch.
If you still have problems after you do the battery disconnect thing you probably do have LCM problems.

[Mark]

Ok, I have a 99 528iT. My LCM has been replaced. My 3rd brake light flashes on/off randomly. And I have a light out warning on my dash. All my other lights work fine.....Im also wondering, if I turn my headlight switch to the middle position, shouldnt my orange corner lights come on? Some people call them driving lights or park lights?? My orange side markers come on, but not the corner lights. My turn signals work/

[JimLev]

"Drive It Like You Stole It, A Sickness for Quickness"
The Bottle Rocket "King of Spray" 2 Stage Nitrous Oxide
Dare to be different and stand out among the crowd of me-to-cars!
No guts, no glory! Tire smoke, not traction control!
Zionsville all aluminum radiator to replace the 3 leak prone Nissens Radiators!

NOS Progressive 2 Stage Controller with port injection
Snow's Performance Methanol/Water Injection
Dinan downloads, VAC Under Drive Pulleys
Dinan Carbon Fiber CAI
Dinan Front Strut Bar
Electric Cooling Fan w/PWM controller
NGK Iridium Plugs
DDE Enhanced Angel Eyes, Smoked Lenses
Koni FSD's/H&R Springs, BAV Brass Caliper Bushings
Eisenmann Race Exhaust (from H8-Rain's car)
///M5 3.15 LSD
///M5 Sway Bars, Front & Rear
Energy Suspension Polyurethane Sway Bar Bushings
///M5 Gauge Cluster Rings ///M5 Lip Spoiler
///M5 Mirrors and Switches
Leather Z weighted shift knob (thanks H8-Rain)
Rogue “Octane” Short Shift kit w/WSR
Rogue Tranny Mounts
StopTech Brake Lines Front & Rear
Axxis Deluxe Plus pads Front & Rear
Staggered M Parallel 66, Xenons
Modified CDV, UGDO
Euro Storage Tray (thanks Zombywolf)
Redline in Diff and Tranny
Passport 8500 X50, Escort ZR3 Laser Jammer
G-Tech/Competition Pro Data Logger
Auto Enginuity OBD-II Scan Tool
25% Tint, X-Pel, LoJack
PIAA Driving Lights
BMW CCA Member Boston Chapter

[Whorse]

I had some weird things like that happen a few days before i had a FIRE.
Brake lights would randomly come on and stay on sometimes. Sunroof pipe was disconnected. Water came down the pillar straight onto the LKM





Andreas
Queens NY
BMWCCA# 186796
86 325es (wrecked by careless driver)
87 325 (project for life)
00 540is 6spd (daily driver)

[Mark]

I dont have any issues with my tail brake lights. Just the third brake light on the roof of the tailgate. I've had my LCM replaced with no other problems as far lights. I also had a leaking sunroof and the hose was reattached. What could this be?

Thank you
Mark

[Whorse]

I paid the dealer so much and in the end there was still a leak, i had to figure it out myself. they just said it was a bad sunroof seal, meanwhile it was the pipes going into the sunroof cassette.

Doesn't matter which lights turning on, every single bulb in the e39 is controlled by the LKM. When it was shorting out i had every single light on the car blinking or staying on RANDOMLY.

Andreas
Queens NY
BMWCCA# 186796
86 325es (wrecked by careless driver)
87 325 (project for life)
00 540is 6spd (daily driver)