It's very unusual for both rear door locks to fail simultaneously. I suspect an electrical fault in the wiring to the rear doors rather than a mechanical fault in both locks at the same time. Getting the doors open will require removing the rear seat base cushion if possible to allow more room for access. The interior door trim will have to be carefully removed. Then peel back the plastic waterproofing liner. The door locking mechanism should then be carefully studied to find a way of operating the lock catches with a screwdriver etc.
Dann
September 2007
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