car draining battery over 24 hours

[trevor searle]

Can anyone help please... we have a 75 connoisseur and we have put a new battery on her but the car is draining the battery if its left standing for more than 36 hours.....we've had all the electrics checked out and nothing is using more power than needed and we;ve also tested the alternator by disconnecting all the electrics and seeing if the alternator has any affect but the battery still lost power.......please help anyone....its one of those nagging problems which is spoiling the joyment of the car

[Charles]

Just a couple of thoughts:

1. Have you checked that the boot light goes out when the lid is shut? If it stays on long enough, it will eventually drain the battery.

2. Do you always switch the radio off before switching the ignition off? If you don't, I have been told that this can gradually drain power, even though the radio appears to go off when the ignition is turned off (don't ask me why).

[FrenchMike]

Just a trick ,you say 24 hours so one to two ampere are drained continuously

1 amp x 12 volts = 12 watts (not negligible)

By this season ,car completely cold ,i guess you can feel it somewhere.

Good luck

Mike

[whitevanman]

Do you have the factory highline with satnav? After water got into mine my nav unit refused to shut down so the disc was running 24/7 with both the lights on the unit in the boot.

Easy check, open the boot and leave open the nav should shut down after a couple of mins. My nav is currently sitting in the airing cupboard and hopefully will be ok when re-fitted. This would flatten my battery enough to stop the car turning over within a day or two.

[COLVERT]

Need more input. LOL.


Did you fully charge the new battery before fitting it ???

[chrissyboy]

using a multi meter connected to the battery start pulling all the fuses one by one till you see chance in the meter reading ,when that happens see what fuse it is then you will know what is draining the battery .

[SD1too]

Originally Posted by trevor searle

... the car is draining the battery if its left standing for more than 36 hours.....

Trevor, to the club.

First of all, can you tell us what happens when you put the key into the ignition and try to start the car. Do you:

1. Hear a click, but the starter motor doesn't turn.
2. Various dashboard lights flash randomly in a worrying manner
3. Absolutely nothing happens; no click or lights.

Thank you.

Simon.

[MattyC]

If you can, check if the alternator is "warm" to the touch when the engine has been standing for 6+ hours. If so, it could be a duff alternator.

[trevor searle]

Originally Posted by Charles

Just a couple of thoughts:

1. Have you checked that the boot light goes out when the lid is shut? If it stays on long enough, it will eventually drain the battery.

2. Do you always switch the radio off before switching the ignition off? If you don't, I have been told that this can gradually drain power, even though the radio appears to go off when the ignition is turned off (don't ask me why).

thanks for all the comments to our problem..... we have checked the sast nav compartment in boot and the boot light goes out.... we've tried all internal lights....basically we've tried all that everyone has suggested all but one,....Simon... in answer to your question.#we have a clicking when starting but with no start, all interior and exterior lights flash including the headlights which does seem to be strange cos we don't believe that they are connected to the alarm system, however less than a 5 minute charge on the battery is enough to start the car????? we are using a 3 week old battery which is 640 starting amps and 75 ah

[trevor searle]

Originally Posted by SD1too

Trevor, to the club.

First of all, can you tell us what happens when you put the key into the ignition and try to start the car. Do you:

1. Hear a click, but the starter motor doesn't turn.
2. Various dashboard lights flash randomly in a worrying manner
3. Absolutely nothing happens; no click or lights.

Thank you.

Simon.

thanks for all the comments to our problem..... we have checked the sast nav compartment in boot and the boot light goes out.... we've tried all internal lights....basically we've tried all that everyone has suggested all but one,....Simon... in answer to your question.#we have a clicking when starting but with no start, all interior and exterior lights flash including the headlights which does seem to be strange cos we don't believe that they are connected to the alarm system, however less than a 5 minute charge on the battery is enough to start the car????? we are using a 3 week old battery which is 640 starting amps and 75 ah