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Wifes "new" 1990 240 with 226,000 miles came with 2 keys which look identical. One is the original key and the other is a copy. The car has central locking- this works fine- all locks operate. However, the original key will only open the drivers door and operate the ignition. It will not open the trunk lock or the passenger door. The copied key opens the drivers door and the trunk, but again not the passenger door.
It was a single-driver car- I figure the PO only used the central locks and rarely used a key on passenger side and trunk. I suspect corrosion in the lock cylinder- sprayed a little PB blaster in there but that hasn't worked yet. What gives? Any tips?
Solved lots of Volvo problems over the years, but never a had a lock issue! Thanks a lot.
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