Flat Battery

[EDSTARVR6 0]

The problem: If I lleave my car for 3-4 days it will not start (plus the digital clocks don't show and the central locking doesn't work). I know the alarm system is not the cause of the problems, but what could it be.

 

Have you experienced this before?

 

The car is booked in at an autoelectricians for Monday, but any ideas I can pass on might cut down the time they spend fault finding.

 

thanks

[Reggit 0]

Possible an interior light staying on, boot or glovebox are possible culprits.

 

Could just be a duff battery that's not holding its charge

[dr_mat 0]

1) Stick a voltmeter on the battery.

2) Use the search to find previous threads detailing this stuff..

 

;)

[EDSTARVR6 0]

Cheers dude. Did search the Forum before, but used the wrong search terms me thinks.

Will get a new multimeter, I think my £3 item from Maplins is shagged, and then start checking things. fingers crossed it's the boot light.

 

;-)

[Supercharged 2]

Check the usual culprits then start pulling fuses out to find which circuit is the problem

[Igor 0]

Obtained from our American Chums at http://www.corrado-club.com

"An additional entry for your known problems list.

 

I have a 1990 G60 which has drained the battery when

 

parked since day one. What I eventually discovered

 

is that there is a power window relay control unit

 

mounted to the left of the left rear passenger seat

 

which has a connection to the door switches (why?).

 

I observed that when the unit is first connected with

 

the doors CLOSED there is no power drain. However, as

 

soon as a door is opened a relay engages inside the

 

unit (you can hear it click in) and from then on there

 

is a consistent 100mA drain on the battery. You can

 

only release the relay (and the power drain) by

 

unplugging the power feed to the relay module. This

 

power drain is not a problem if the car is driven

 

regularly, but if you only use the car from time to

 

time you'll be fighting a dead battery more often

 

than not.

 

My quick fix to this problem was to disconnect the

 

wires which go to the door switches. Every thing

 

appears to work fine without this connection. A

 

"smoking gun" is that the door switches were changed

 

in 1991 so that there are isolated contacts feeding

 

this control unit instead of the 1990 version which

 

shares the switch with the overhead light unit..."

 

Hope this helps guys...