New battery fitted and its still going flat ??

[m8wos]

i was suffering from a flat battery so went to the shop bought new one and got it fitted, but im still getting a flat battery ...any ideas cos its doing my head in.

everything else is ok on the car as far as i no.

signum 1.9 tdi auto

thanks

warren

[Big Red]

on my 2.2dti i had the cause of my flat battery turned out to be the aircon wasnt dissengaging itself and was draining battery??? dont ask me how thats just what my mate said and after he fiddled on it was sorted matey

cheers

[chrisvectra]

Have u checked the bootlight is going out ?

[armoured farmer]

also, glove box light, alternator not holding charge.........

[Das]

Did you check the voltage across the battery with the car running before you bought the battery?

[TonyP2020]

Did you let the electrical system die of completely when you changed the battery?
ie, was the car with no battery for a few minutes?

If not that might be an idea in case one module is not shutting down completely because of a software problem.

Assuming it's not bulbs as mentioned above you need to use a multimeter to measure the current flowing out of the battery with the car locked and the bonnet open switch pressed in.
Not easy to do, you will probably need 2 people.
Once you get an idea of how much the current flow is then some ideas might come to mind.
Removing fuses (and then locking the car) isolates individual circuits, but it is a hit and miss job and easy to lose track of where your up to.

[alcutler]

i was suffering from a flat battery so went to the shop bought new one and got it fitted, but im still getting a flat battery ...any ideas cos its doing my head in.

everything else is ok on the car as far as i no.

signum 1.9 tdi auto

thanks

warren

How long does it last before going flat - are you sure your alternator is working ok - it should be putting out around 14.4 volts with the engine running and no load. Also was the battery fully charged when you bought it - if they have had it in storage for a long time it could be discharged or it could even be defective.

[m8wos]

just plugged in my op-com and got the following

battery runnining at 13.7 volts plus these but dont understand..


OP-COM - CAN Communication Window> 2006 (6)|Vectra-C / Signum|Engine|Z 19 DTH

Read Info...
Identifier: 0x075D
VIN: W0L0ZCF4861109268
Hardware number:81013409
Motor type: Z19DTH
Part Number:55205632
Software version number: WJOAS100_S
Hardware manufacturer number: 0281013409
Software Number: 1037383690P319_O90
Programming Date: 20070208
Hardware key number: S001001044
System description: BOSCH0100
Type approval number: B05010
Variant programming: 0x00006094
Alpha code: ES
Hardware manufacturer system name: EDC16
Software version: O90JTD75
ECU variant coding: 0x00003BC0

Total number of fault codes: 6
P0560 - System Voltage Low Input
(12) - Not present
P0400 - Exhaust Gas Recirculation Flow Insufficient Detected
(5A) - Not present
P0070 - Ambient Air Temperature Sensor Malfunction
(74) - Not present
U2108 - CAN-Bus no Communication with ABS/TC
(70) - Not present
P0500 - Vehicle Speed Signal Range/Performance
(7E) - Not present
P0500 - Vehicle Speed Signal Range/Performance
(7F) - Not present

[Dre]

clear the codes go for a run and read it again just in case the codes are from a previous problem

[poves]

Start with the simple things first , the a3 project I'm working on at the moment had the same issue , even with a new battery.
It ended up being the vanity mirror light in the drivers visor was staying illuminated , the switch on the slider was faulty.
The only thing I would say is 13.7v seems a little low , from what I have read a healthy charging system should average between 14v - 14.8v .