Zorro587

Active Member

• Feb 20, 2015

• #1

HI all,

I replaced both my alternator and battery on my P38 4.0 (GEMS) in November last and all has been well since.

Last night I replaced the air filter. When I came to start it this morning the battery was flat. I found that I'd left the bonnet only partially closed, not fully latched in position.

Is there a 'closed' sensor on the bonnet that might have kept whichever ECU (and/or the BECM) running all night?

I only do relatively short journeys by and large, but I've had no other problems with the battery since I swapped it.

 

Datatek

Well-Known Member

• Feb 20, 2015

• #2

Yes, there is a switch on the bonnet to detect that it's open.

 

brianp38dse

Well-Known Member

• Feb 20, 2015

• #3

There is a sensor on the bonnet, it may have keeped the becm awake.

 

Zorro587

Active Member

• Feb 20, 2015

• #4

Thanks both, lesson learned

 

B

Bladerunner919

Active Member

• Feb 20, 2015

• #5

It's a 'feature' - if you leave the bonnet open it flattens the battery for you so that nobody can fiddle with the car's electrics. Probably.

 

Saint.V8

Dyed-in-the-wool 100% RR Junkie

Full Member

• Feb 20, 2015

• #6

Bladerunner919 said:

It's a 'feature' - if you leave the bonnet open it flattens the battery for you so that nobody can fiddle with the car's electrics. Probably.

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