P38 battery dead after rain!

Brutus76 · Oct 23, 2013

Hi,

The battery on my P38 (2001, DHSE) seems to go flat after heavy rain downpours..something that happened twice here the last couple of days

It has occurred overnight on both occasions, but I think the parking/near lights are turning on, which thereafter drain the battery (i noticed the light on late one evening also following rain / wet weather)..

Does anyone know what this may be caused by, or more importantly perhaps, how I can fix it?

Thanks a lot for any help!

Datatek · Oct 23, 2013

Brutus76 said:
Hi,

The battery on my P38 (2001, DHSE) seems to go flat after heavy rain downpours..something that happened twice here the last couple of days

It has occurred overnight on both occasions, but I think the parking/near lights are turning on, which thereafter drain the battery (i noticed the light on late one evening also following rain / wet weather)..

Does anyone know what this may be caused by, or more importantly perhaps, how I can fix it?

Thanks a lot for any help!

Check if the carpet is wet in the drivers footwell.

Brutus76 · Oct 25, 2013

Hi there, thanks for looking at this! Yes, I noticed that there is some damp/water at the driver's side carpet..but somewhat unsure what that means?? thanks

wammers · Oct 25, 2013

It means you have water ingress. There was a loom that used to leak water through the bulkhead in heavy rain, but that should have been rectified on your year of car. Leak on pollen filter top. Sunroof drain if it has a sunroof. Dampness could be effecting plugs under dash or cables under carpets or plugs behind right hand kick panel or BECM under drivers seat. Find the leak and stop it. Dry out carpet.

Saint.V8 · Oct 25, 2013

Leak could also be the much documented O Rings....

Datatek · Oct 25, 2013

Wet/condensation in the BECM and the connectors can play havoc.

BillT · Oct 25, 2013

What do you normally do when you sus damp, Hair dryier for 10 mins?

Datatek · Oct 25, 2013

BillT said:
What do you normally do when you sus damp, Hair dryier for 10 mins?

:hysterically_laughiFix the leak, then a dehumidifier for 24 hours or as long as it takes.

dogsbody · Oct 25, 2013

dehumidifier over night, you'll be amazed how much it sucks out of the car

Almost as effective as an LR main dealer on your bank balance

gfromleeds · Oct 25, 2013

I put a dehumidifire in mine after o ring leck ant it pulled about 3-4 pints out

Brutus76 · Oct 27, 2013

dogsbody said:
dehumidifier over night, you'll be amazed how much it sucks out of the car

Almost as effective as an LR main dealer on your bank balance

Hi all, thanks for help with this one! - i'll search for leaks today and see what I find - perhaps even in time for the little storm coming etc

P38 battery dead after rain!

Brutus76

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Datatek

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Brutus76

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wammers

No longer with us, RIP

Saint.V8

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Datatek

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BillT

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Datatek

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dogsbody

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gfromleeds

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Brutus76

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