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poppysdad123

New Member
hi all and happy new year. my problem is my battery goes flat after 24hours , had it check by two different people both say the drain is acceptable. battery holds it's charge when disconnected alternator charges and am told the red light coming on and only going off when engine is started means it is not draining back. problem seems to have got worse over the last couple of years ,it use to last about a week before it went flat. have been told the rf reciever is the next step as they are a common fault. any ideas ? thanks for your time, hope some one can help:confused:
 
there's really reams and reams written about this problem. too much to repeat in one post without turning it in to an essay. really suggest you use the search function, pour yourself a whiskey and start reading.
 
You could put a location in your details. It would actually be quicker if you could bribe another Rangie owner local to you to come and check yours out than to repeat all of the help you'd find by having a good nose at previous posts on this subject.
 
dogsbody said:
You could put a location in your details. It would actually be quicker if you could bribe another Rangie owner local to you to come and check yours out than to repeat all of the help you'd find by having a good nose at previous posts on this subject.
Click to expand...
sorry i should have said i live in a small village near high easter in essex
 
I just changed mine. Actually, my 15 year-old son did it for me.

I got mine here - £155 instead of over £200 from my local dealer.

Inside the boot, remove the plastic trim/cover next to the parcel shelf. There are some plastic plugs that lever out with a blunt knife and a screw at the front of the cover. It lifts off. The receiver is secured by one cross-head screw and has two connectors. 10 minute job.
 
yes, that's the latest part number.

You can check that this is the problem by disconnecting the antenna (blue wire) as a temporary fix. Although I was told that the older designs can cause other problems apart from battery drain, so best to replace anyway.
 
poppysdad123 said:
sorry i should have said i live in a small village near high easter in essex
Click to expand...


Not to far from me then, if I can be of help pm me.

As stated above theres loads regarding this subject, year, model and engine type (Gems, Thor or Dozzle?) would possibly help
 
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One of the reasons for me suggesting that you have a good read before anything else is that you can check, before you spend any money, if this is indeed your problem. You need to know if your BECM is being allowed to sleep peacefully or is the RF unit waking it up constantly causing the battery drain.

There can be other issues with a Rangie, in fact any car that can cause this. I agree that if you have the older RF unit changing it is a good idea but I'd hate you to do this only to find your battery flat again the following morning.

Us Scots, we're not tight, just careful.
 
poppysdad123 said:
hi all and happy new year. my problem is my battery goes flat after 24hours , had it check by two different people both say the drain is acceptable. battery holds it's charge when disconnected alternator charges and am told the red light coming on and only going off when engine is started means it is not draining back. problem seems to have got worse over the last couple of years ,it use to last about a week before it went flat. have been told the rf reciever is the next step as they are a common fault. any ideas ? thanks for your time, hope some one can help:confused:
Click to expand...

The fact that two people say the drain is acceptable and your battery goes flat in 24 hrs is contradictory.Either your battery is U/S or the drain is too high.(should be approx 30mA when the BECM is in sleep mode).
Also the fact that the alternator warning light goes out once the engine is running does Not prove the alternator/rectifier/regulator is not the cause of your drain.
I would find out what your actual battery drain is ,current wise ,to see if it is actually accaptable.
Also do the BECM sleep test as well. It is well documented and simple to do.
 
JohnP38 said:
The fact that two people say the drain is acceptable and your battery goes flat in 24 hrs is contradictory.Either your battery is U/S or the drain is too high.(should be approx 30mA when the BECM is in sleep mode).
Also the fact that the alternator warning light goes out once the engine is running does Not prove the alternator/rectifier/regulator is not the cause of your drain.
I would find out what your actual battery drain is ,current wise ,to see if it is actually accaptable.
Also do the BECM sleep test as well. It is well documented and simple to do.
Click to expand...
the drain was 30ma when tested battery can be left days off the car and still start it when put back on . i there fore assume the drain is not there all the time . thus leading me to think it wakes up . does that not make sence ? is the sleep test look for the red light ?
 
poppysdad123 said:
the drain was 30ma when tested battery can be left days off the car and still start it when put back on . i there fore assume the drain is not there all the time . thus leading me to think it wakes up . does that not make sence ? is the sleep test look for the red light ?
Click to expand...

That makes sense.Yes the light next to the gear selector lever.once all the doors etc are closed,the light(fairly dim) should go out after about 3 minutes and stay out.If it comes back on then the BECM is being woken up.The most likely cause is RF interference causing the RF receiver to send a wake up signal to the BECM to be checked if it is the correct fob code received.
 
poppysdad123 said:
the drain was 30ma when tested battery can be left days off the car and still start it when put back on . i there fore assume the drain is not there all the time . thus leading me to think it wakes up . does that not make sence ? is the sleep test look for the red light ?
Click to expand...


The fact that your battery holds a charge off the car does not prove the battery is OK. Batteries lose capacity over time, the battery might be on the edge of failure so that 30ma is enough to drain it.
 
i have changed the battery twice so i really don't think it is the battery but i suppose it is possible . i had an land rover one that was about 4years old wich used to go flat after several days . i changed that for a halford's one recomended for the p38 ,that went flat so i took it back and they changed it for a new one ' that still goes flat, i there fore think it is a good bet it's the battery. the battery can be off the car for a week and still be fine when re-connected. would the fact i live on a hill mean the car has to work harder to level when woken up or does it not do that?
 
poppysdad123 said:
i have changed the battery twice so i really don't think it is the battery but i suppose it is possible . i had an land rover one that was about 4years old wich used to go flat after several days . i changed that for a halford's one recomended for the p38 ,that went flat so i took it back and they changed it for a new one ' that still goes flat, i there fore think it is a good bet it's the battery. the battery can be off the car for a week and still be fine when re-connected. would the fact i live on a hill mean the car has to work harder to level when woken up or does it not do that?
Click to expand...

Parking on a hill will not affect it. My bet from what you say would still be the battery. Seen others with trouble with Halfrauds batteries. But obviously worth checking everyother possibility. 135AH 1000CCA is the business:D
 
thats funny you should say that because one of the guys that did tests said battery was unserviceable. i just thought that if it stood so long off the car then still started it , it must be ok . they also said the amps ? went down to 9 when cranking wich they did not think was good. does that still make you think the battery? it will still be under warrenty so i can take it back .thanks for your time sir
 
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