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A flat battery means you can't get the deadlock or alarm system to release its grip
I'd start by charging the battery you should be able to do this via the cigarette lighter / accessory socket. You'll need the appropriate attachment for your charger but car accessory shops sell these- Alternatively if you can't get into the car/ boot the other way to do this is jack the car up so you can get under the front.
Locate the starter motor and the large power cable that runs to it - connect the positive battery charger lead to this terminal
then connect the charger negative lead to the metal of the engine block
This should complete the charging circuit and get some power into the battery allowing you into the car
Thanks very much. In fact I managed to access a key hole in the boot by removing the rear number plate and its backing then I could use the spare key to open it manually. The tip about using the cigarette lighter sounds useful and I will keep an eye open for the attachment. Regarding trying to access the starter direct would probably be impossible or impractical for a DIYer as the Thesis has a complete under body protection sheet. Thanks again Vince
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