all 3 turn lights stay on

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ovibonjovi

New Member
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5
Hello RR experts. Just bought a 2001 4.0SE. My first electric problem started soon after. When I park the car and take out the key all 3 LH turn lights remain illuminated permanently. To prevent the battery from being drained, I removed all bulbs. Has anybody an idea where to start solving this problem; fusebox? BECM? Alarm?:confused:
 
i know this may sound dumb! is the indicator stork in the off (middle) possition?
park lights im thinking?
 
ovibonjovi said:
Hello RR experts. Just bought a 2001 4.0SE. My first electric problem started soon after. When I park the car and take out the key all 3 LH turn lights remain illuminated permanently. To prevent the battery from being drained, I removed all bulbs. Has anybody an idea where to start solving this problem; fusebox? BECM? Alarm?:confused:
Click to expand...

Do they remain lit up when the vehicle is running as well?? Usually when this happens you are looking at BeCM problems :(

See RangeRovers.net :: View topic - BeCM repair

Its seeming to be a more and more common problem with these vehicles now.

-Wills
 
Had this prob recently with 1 indicator on permanently, textbook had no faults recorded but it proved to be the becm located under drivers seat and if you can find someone capable and willing to open up the becm they will find by testing contacts on the PCB that a tiny item called a mossfett is the problem maybe 2 or 3 in your case. these mossfetts can be replaced the difficulty is finding someone who has got some
 
BeCM time it seems! After reading the article on RangeRoversnet it looks like a doable job. I am a bit worried however by MarketMac's comment on the difficulty of finding mosfets. Does anyone know of a source for the mosfets. I'd like to get this before I start opening up the BeCM
 
I had the same problem just last week, although all 6 of the indicator lights were permanently on - and I only discovered it when I went to the car to go home from work! The battery had just enough power to illuminate the lights on my dash but that was it. Bought a new battery in the end as the dead one wasn't the right one for the car anyway! My electrics have gremlins playing havoc - this morning the car apparently filled itself up with fuel (according to the petrol guage anyway). Settled back down to nearly empty after 10 miles! Oh, and it locks and unlocks itself as I drive along. And every now and again it tells me I have a traction control failure when I start the engine (just switch off and on, and it's fine). I actually am beginning to hate it.
 
PROBLEM SOLVED!
the electronics expert from the garage where I bought the car had a look at it and said it was quite a common problem with these cars. He said it was caused by aluminum housing of the BECM creating condensation (moisture inside the BECM) with humidity and heat changes. These in turn cause corrosion on the prints with the resulting strange electronic troubles. He opened the BECM and cleaned the prints. It now works perfectly again. Unfortunately can't tell you how exactly the cleaning was done. But before you spent money on exchanging mosfets, or worse a complete BECM, you might want to consider this cheap option first.
 
The BECM is underneath one of the front chairs (mine is a lefthand drive, and it is under the passenger chair). It's a large alu box, you can't miss it! If you go to Range Rovers there is a whole section dedicated to opening up the BECM. But be carefull, this is the nerve centre of your car, don't mess with it unless you know someting about car electronics.
 
If damp gets into the BECM, theres a good chance it's caused by some over enthusiastic bod going mad during interior valeting and soaking everything in sight. There is a setting in the software for damp alarm anyway. Delve into the BECM without confidence or experience at your peril as they are very prone to ESD. Also make sure you have acess for someone to come to you for progamming if necessary after replacing mosfets as the car may not start
 
I am having the same problem, with all six indicator lights coming on by themselves and deadening the battery or the alarm triggering itself.........usually at around 02:30 EVERY morning.........Is there a fuse that I can pull to stop the lights coming on to drain the battery until I can sort out the BECM.......?

Thanks
 
Last edited:
chriscrane said:
I had the same problem just last week, although all 6 of the indicator lights were permanently on - and I only discovered it when I went to the car to go home from work! The battery had just enough power to illuminate the lights on my dash but that was it. Bought a new battery in the end as the dead one wasn't the right one for the car anyway! My electrics have gremlins playing havoc - this morning the car apparently filled itself up with fuel (according to the petrol guage anyway). Settled back down to nearly empty after 10 miles! Oh, and it locks and unlocks itself as I drive along. And every now and again it tells me I have a traction control failure when I start the engine (just switch off and on, and it's fine). I actually am beginning to hate it.
Click to expand...

Sounds like a bad earth or a battery problem - RRs hate batteries that are even slightly less than perfect!! Failing those two, BECM I would think...PM Irishrover, he may be able to help!!:eek:
 
The BECM has automatic Moisture Detect facility which should be enabled but some BECM's have it disabled after they have been programmed.

WD40 is a no no. The BECM should be dried out with a hair drier, or better still left in the Airing Cupboard for a good few hours after visible traces of water/condensation have been removed. Do not use one of those Hot Air guns under any circumastances, however tempting it may seem, the high temperature can wreck the components and break down the laquer coating on the boards which help the waterproofing. The Hot Air guns are also capable of melting solder.
 
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