04 Dico. Battery Replaced. Still have to jump

kennith

Well-known member
Apr 22, 2004
10,891
172
North Carolina
Wasn't there an issue some time ago where every time someone's neighbor used his garage door opener it powered up the BCU in his Range Rover P38 and drained his battery? :rofl:

That's funny, but it's actually something to consider. If you've been playing with a fancy Rover-specific scanner, you must be sure your BCU is going back to sleep when you're done.

You need to check for current drain, man. Be sure that's the issue first. Is it likely you just have terrible battery fortune? No, but it's possible. It's also possible you've got an irritable gnome crawling up into your engine bay every night to short the battery.

You have to remove variables by proving at least one thing to be probably true.

Once you are sure, rule out the alternator, which you've done by simply replacing it. That's not the end of the world, you'll have needed one eventually, and now you've got a spare.

The alternator may be an obvious culprit, but it's not the only potential source. It could be anything. Test for a drain, and then find out where it's coming from. If you can't be bothered to do so, or don't feel comfortable doing so, drop it off at a shop.

Electrical issues are simple to diagnose, but they require lots of time and patience when they are not obvious.

Cheers,

Kennith
 

Keanan

Well-known member
Apr 15, 2010
219
1
Redlands, CA
Don't listen to Kennith. Testing for a parasitic drain is such a waste of time.

Throw parts at it in the following order:

1.BCM
2.ECM
3.Body wiring harness

Do not replace with used parts! Only use brand new parts from the dealer.
 

kennith

Well-known member
Apr 22, 2004
10,891
172
North Carolina
Don't listen to Kennith. Testing for a parasitic drain is such a waste of time.

Throw parts at it in the following order:

1.BCM
2.ECM
3.Body wiring harness

Do not replace with used parts! Only use brand new parts from the dealer.

Dumb-ass.

You failed to mention the driver-side power seat recline motor, which should clearly be second on your list.:rolleyes:

...As if you could complete such a list without my expertise.

Cheers,

Kennith
 

Keanan

Well-known member
Apr 15, 2010
219
1
Redlands, CA
600 is pretty common for alternator replacement...


Check all of the grounds. Battery and engine straps too.

<iframe src="//www.youtube.com/embed/bhFHIlwCSq0?rel=0" allowfullscreen="" frameborder="0" height="360" width="480"></iframe>.
 

DownUnder

Well-known member
Mar 23, 2007
738
0
46
Vancouver, WA
Going to hijack this post My question is: Should the power seats work when the vehicle is off? Mine do and I am thinking this should not be.