SL320 door locks
 

Have 97 sl320, the doors will lock and unlock with the the dash panel switch, but won't with the key. any ideas? Thank you

When you say " won't work with the key " does the key not turn or does it turn but won't operate the lock ?

key turns in both directions,and feels normal. just nothing happens. thanks

Have a look at any C / E / S / SL shop manual from that era. There is a 4 or 5 mm allen bolt near or behind the weather strip. Unscrew this and the lock cylinder / rectangular trim will pull out of the door. ( I'm pretty sure the bolt stays captive in the door ) I'm thinking the end of the cylinder broke off. The end is a shaft and a flattened tab.

If this isn't the problem, look through the hole for broken linkage. If that does not turn up any broken parts, the interior door panel must come off.

Yes haven't check that. Good idea, will do this. Thank you, good place to start.