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What type of battery should I use in my Jaguar 2002 S Type? I installed a new battery two days ago and would not start today? Could it be electrical? The read out said I had a bad battery before it was replaced? Thanks
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most modern day car alarm systems started being factory fitted well over 10 years ago. The back up ni-cad battery inside the main siren will probably now be derelict and will cause many false alarms and immobiliser faults. In most cases, find out where the siren is tucked away( it will not be eady to get too because its a security device), and either replace the unit or ni-cads or just unplug it.
Always best to get car rescanned and clear dtc codes afterwards though too.
Note: keyfob batteries must be replaced annually on service date.
Cheers
Roger
You can add some life to your battery by opening it and adding some water. it gives the battery some short term life, but not very reliable, the best way is to install a new battery.
Disconnect the negative battery cable. Then start at the front of your engine. Pull the spark plug wire off the spark plug from the boot that covers the spark plug. Remove spark plug from engine block, take new spark plug, check for proper gap and adjust if necessary, and then install new one into block. Repeat for the rest of the plugs. Re-connect negative battery cable and you should be good to go.
First off check the battery. Try and jump start it. If that does not get the vehicle running you may have a problem with your J gate as it will not start unless in park or neutral. If an internal electrical fault has happened then the micro swith may not send a signal to the ecu to allow the car to start. the J gate is the gear selector by the way
If its not a bad battery, or loose cables on the battery, you need to get it in to a repair shop soon. I had the same thing happen, and I eventually wound up doa on the 401 in Canada.
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