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[Bumbazor]

When I replaced the engine in my car I noticed my battery was a bit low, although I didn't test it with a multimeter.

On turning the key to position 2 (ie just before ignition) all the usual lights came on, but those that normally go out, didn't. Of course the engine management light, oil pressure, and the other one I can't remember don't go out until the engine is running. I'm sure I remember some stay on for a few seconds then go out, even before ignition. Now, I'm left with at least the ABS and TC lights on. When I attempt to start the engine, the lights dim slightly but nothing else happens, so I suspect a flat (ish) battery.

The battery is charging now, but can anyone confirm my suspicion that a low battery would cause the behaviour I described with the lights staying on when they should go out?

[Auto Addict]

Wouldn't have thought so, but may be contadicted.

[Bumbazor]

I'll be doing a paperclip test on it later anyway, so should know more soon.

[mantahatch]

If the engine did not turn over (crank) at all and the lights only dimmed slightly then I would supect starter motor or associated wiring.
If the lights dimmed to virtually nothing then quite possibly a flat battery.

HTH

[charlie]

When I replaced the engine in my car I noticed my battery was a bit low, although I didn't test it with a multimeter.

On turning the key to position 2 (ie just before ignition) all the usual lights came on, but those that normally go out, didn't. Of course the engine management light, oil pressure, and the other one I can't remember don't go out until the engine is running. I'm sure I remember some stay on for a few seconds then go out, even before ignition. Now, I'm left with at least the ABS and TC lights on. When I attempt to start the engine, the lights dim slightly but nothing else happens, so I suspect a flat (ish) battery.

The battery is charging now, but can anyone confirm my suspicion that a low battery would cause the behaviour I described with the lights staying on when they should go out?

YEs  thats right the omega seems to shut down systems in turn to keep the car running starts of abs ,tc then airbag light

[Kevin Wood]

YEs  thats right the omega seems to shut down systems in turn to keep the car running starts of abs ,tc then airbag light

Predictable operation of these safety systems requires the correct supply voltage, so if it goes outside limits, they complain.

Kevin

[Bumbazor]

I HTF that's the problem, rather than the faulty ABS ECU problem I have read about, causing similar symptoms. fingers crossed for later this afternoon.

If it works the car might even get a celebratory clean!