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Discussion Starter #1
Since owning my rangerover I have had to fit 4 new batteries and 2 new alternators in less than 2 1/2 years. My car suffers from terrible battery drain, I have never been able to leave my car for more than one night without the battery being dead the following day. I have learned to live with this as LR dealer could not find the fault.............

After searching this forum, I decided to get the new relay harness fitted to see if that improved matters............NOPE ...!!

Next went to local garage 4x4 specialist (sick of LR dealer) and he has told me that I have a 3amp drain on my battery when the car is in sleep mode.

What can be causing this ?? Has anyone experienced similar problems?

This is a really frustrating problem which nobody seems to be able to identify the cause.

HELP !!

Thanks
Barry
 

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I think I would connect up your ammeter and start pulling fuses to see which circuit is causing the drain. Then you can start narrowing it down from there.
 

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I have a similar problem, although it is intermittent.

If I don't use the car for a week or so, chances are the battery will be as flat as a pancake.

Now and again, it goes dead overnight for no apparent reason.

It's soooooooooooooo annoying!
 

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I presume that is what my local garage called a "hedgehog".

They havn't done this yet, as a new battery seemed to cure the problem for a while.

Looks like I'm going to need this little sucker fitted.

Is it a DIY job????
 

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Discussion Starter #7
My local garage had done some research and then recommended fitting some sort of relay / harness to stop fans working through the night. This was fitted a couple of weeks back and has not made a blind bit of difference. Is this harness thingy (excuse my lack of knowledge) the same as the FSR ?? If not how does the FSR help matters ?

Please explain in simple terms for us novices..........Thanks !

Barry
 

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Discussion Starter #8
I was woken up at 4am this morning with my car alarm going off .............battery completely dead again. It was fine yesterday morning after sitting in the drive all day but for some reason it was flat this morning.........I am losing the will to live - this car is a nightmare. The last resort now is to put it into a recommended specialist auto electrician to see if they can find anything. Landrover could not find the fault and charged me £315.00 for the pleasure????

I have enjoyed my 3 years of rangerover ownership but my love affair with these cars is sadly coming to an end due to the constant electrical issues. It is possibly the most annoying problem a car could have - not knowing in the morning if the car is going to start..........bloody annoying. I must have the most used set of jump leads in the whole of the UK..............

I will let you guys know what the electrical auto specialist finds as it may help someone with similar issues !!

Barry.
 

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This is a common problem which is easily remedied by replacing the above mentioned resistor. They cost about £26 and the job takes but a few minutes.
If you search this forum for 'Hevac final stage resistor/battery drain' there is a detailed description of the job including photos. In the interim you can
prevent the battery drain by pulling fuse#64.
Good luck.
 

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Discussion Starter #10
Thanks,

Does pulling fuse 64 cause any problems because if it solves my battery drain I am happy to remove the fuse and live with it??

Also, does the FSR have a part number ?

Lastly, I can't find the thread with the photos can you point me in the right direction - Cheers

Barry
 

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Discussion Starter #11
I just tried to find fuse #64 and I cannot locate this fuse. The fusebox in the front of my car only goes fron # 1 - 60 and the fusebox in the rear only goes from fuse # 71 - 89 ?? Am I missing something here ??

Thanks
Barry
 

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Hi weimaraner73,

The fuse box being referred to is in the glove box, just below the CD Changer. As you'll see from the diagram on the back of the lid, fuse #64 is the 50amp jobbie at the far right which feeds the "Blower".

It won't do any harm to pull this out and see if the drain persists.

I got the final stage resistor (hedgehog) fitted last week, so fingers crossed. I also mentioned to the mechanic that one of the headlight wiper motors had stopped working a while back, so he pulled the fuse for these, just in case it's shorthed out and pulling current.

I use Greenbank 4X4 in Tullos and would recommend Taylors just off the Lang Stracht, if you go down the auto electrician route.

The guys at Greenbank told me that if the original LR battery is flattened a few times, it never holds a proper charge.

Good luck!
 

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Discussion Starter #13
Hi Garioch,

I went in and picked up my new hedgehog part# JGO000021 today from town and county Aberdeen. I am going to fit this tonight to see if it makes a difference. RE fuse #64 - I just looked at the service manual hence not seeing #64 listed. I will take a look in the fuse box tonight to see if I can see it.

My local garage - northeast 4x4 in stonehaven also recommended Taylors for the electrical work but I will try the new hedgehog and see if that works before going down this route !!

How is your battery after fitting the new hedgehog ? Has this solved the drain?

Thanks for the advice
Barry
 

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My battery problem is very intermittent.

Now and again, it will go flat overnight for no apparent reason.

However, I have never been able to let it stand for a week or so without the battery going flat, so I plan to do this sometime soon and see what happens.

I'll keep you posted.
 

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Hi guys, sounds like you're getting it sorted. One thing worth mentioning in all of this is that a symptom of the FSR problem is that the heater blower
motor does not function as it should, i.e. the fan speed may only operate at a low rate. Pulling fuse #64 is really only a stop-gap measure until the FSR
is replaced. Do you still need directions to the job description like?
LR322Pilot.
 

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Discussion Starter #16
Hi,

I fitted the FSR this evening without too much trouble apart from some aching fingers from trying to free the **** thing from its location. To my amazement the old one looks exactly like the new one I fitted - baring in mind my car is a 2004 I thought the old one would be alot smaller?? Looks like someone has fitted a new FSR at some point in my cars life. Not sure if this is going to cure my battery drain but time will tell because tomorrow morning will reveal all..........fingers crossed. Hope the **** alarm does not go off in the middle of the night again !!

I fitted the new FSR and then locked myself in the car to see if I could hear any strange noises and all I could hear was a buzzing noise coming from the head unit..........is this normal ?? I have also had a few issues with the monitor flickering now and again and the sound on my stereo failing to work intermitently - could this be in any way connected to the battery drain?

I will let you guys know if my car starts tomorrow - if it does I am owe Garioch and pilot a big thankyou for solving a 3 year old problem with my car. If the battery is flat in the morning I will SCREAM !!!

Cheers guys

Barry
 

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Yes the buzzing sound is normal it does not draw any significant current and usually lasts for up to 20 minutes.As for the intermittent loss of sound does
DSP disappear from your screen menu?. Try cleaning the conections to the amplifier. This can be found behind a cover in the left rear lugage compartment.
When in there check for any signs of water ingress in the area another known problem. Lets hope the alarm has now been silenced.
 

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Discussion Starter #18
Well, went to start the car this morning................DEAD AS A DODO..............AAARRRRRGHHHHH !!!!!

Late for work AGAIN. To date I have put in a new battery, new alternator, FSR and relay harness and still this bloody car goes dead on me. I am away to book it into a specialist auto electricians to see what they come up with. I will let you guys know what they find (if anything.....Landrover dealer could not find anything).

Thanks for the help so far but unfortunately to no avail.......

Barry
 

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I think someone else may have suggested it already, but I would connect a current probe and keep an eye on it while the car is in sleep. You should see a current draw, but it should be tiny normally. If it is large, then start pulling fuses until it stops. You'll be able to narrow it down that way. You may have to lock yourself in the car for a while to get it in sleep mode, and either have a helper to read the current from the battery, or if your lead is long enough, bring it in with you through the window or something.

You probably have a bad relay or something someplace which is failing to cut power to something when the vehicle is supposed to be sleeping.
 

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Discussion Starter #20
The car is booked into a specialist this Friday so I will leave it to the professionals - hopefully they will find out what the real problem is.........fingers crossed !!
 
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