HELP: Doors Won't Lock After Replacing Battery?

[panameras]

After replacing the car battery, the remote door lock does not work anymore. When tried to manually lock with the key, it only locks the driver's side door. But it does lock with the central locking button from inside the car. What would be the problem do you think? Thanks for any suggestions.

By the way, the car has a Giac flash and has cat bypass pipes. It's an Australian model so only had one pair of cats instead two (like the US models), when I first replaced these cats the engine warning light did not come on and it has been fine ever since. Don't know if this info changes anything.

Appreciate any help guys.

[panameras]

Two more problems I've found.

1, radio does not turn off when pulling the key out of ignition.

2, my aftermarket xenon main beams do not work anymore. But the city lights are fine.

Appreciate any help guys

[Loren]

Sounds like a bad ignition switch.

[panameras]

Sounds like a bad ignition switch.

Thanks I think you maybe right, the ignition switch does feel a bit funny. Would replacing the ignition switch solve all of the problems mentioned above?

Another question Loren since you are the expert here, would I need to get the Giac flash re done after this battery replacement?

Thanks again.

[phillipj]

If the ignition "feels funny" it most probably the ignition swtich. When they go they make the car do straaaange things... Replacement should take care of all problems you've mentioned.. Great DIY for that here.

Edited February 23, 2009 by phillipj

[panameras]

If the ignition "feels funny" it most probably the ignition swtich. When they go they make the car do straaaange things... Replacement should take care of all problems you've mentioned.. Great DIY for that here.

Great. Thanks for confirming that.

Any comments on whether the aftermarket ECU flash needed to be redone or not?

[Glyn]

Before you change the ignition switch disconnect the battery again - leave for a few seconds then reconnect - you are likely to find all is well again.

Problem occurs when the contact the positive lead makes when connecting to the battery (earth lead already connected) when fitting if the person does not make just one contact with the battery - not sure how i explain this, When connecting the lead if it is touched on the pole then contact lost and the lead retouched to the terminal it acts like a very fast switch - this confuses the logic circuits in the cars electronics and results in the type of problem you describe.

Just disconnect and reconnect