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Q: Keyless remote not working. on 2002 Audi A6 Quattro

Enthusiast 01be16a5a93688912f14755221fb15211b518d9a788cf01b455e03cc1bd585ac
First my keyless remote stopped working and I figured it was the battery and I wasn't in a hurry to replace it. But just the other night the actual key wouldn't open the door. What can it be?
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you key has two components:
(1) remote transmitter that unlocks the doors and trunk.
may use a replaceable battery; some like BMW recharge the
permanent battery
(2) a metal key that fits in the door tumbler and/or the
ignition switch

if the metal key no longer works, it could be the key is
worn out or the tumbler in the door is defective. try your extra key and see if that works. also try both keys on the trunk lock. you may need a whole new key; available only from the dealer.
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