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S80 remotes or key can't lock doors S80

posted by  k. on  Wed Oct 29 08:41 CST 2003
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In past 6 months my 4 year old, 45k mile, S80 2000 has this annoying symptom.
THe remote fail to lock the 4 doors. I tried to lock by the key but only the driver door locked, the other 3 doors locked then immediately unlocked. As the Volvo dealer advise me to observe (while waiting for a service appointment) I also find the sunroof not operable. These happen randomly about once a week, usually when I park the car,remove key, get out, open one of the passenger doors to retrieve some belongings...5 to 10 minutes passes... close all doors, use the remote but no response.
If I get back into the car, reinsert the key, turn key to level II (dashboard lights on but engine not start) for one quick blink, then remove key, get out , close driver door, push the remote button... HA it works.
Other times both remotes, keys, and sunroof working fine.
The car has been at the Volvo dealer shop several days, they have not recreate the situation as I experienced. Both remote circuit and battery changed. Computer Dx normal! Please help if you have known such case.







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    S80 remotes or key can't lock doors S80

    posted by  someone claiming to be n0v8or on  Thu Oct 30 01:31 CST 2003 [RELATED]

    My money is on a (sometimes) bad key-in sensor switch in the ignition assembly. You can test this by leaving your second key in the ignition, then try to duplicate the locking problem(s). I suspect the computer thinks your key is still in the ignition, so refuses to lock all the doors until you retrieve it.








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      S80 remotes or key can't lock doors! Thanks, nOv8or S80

      posted by  k. on  Sat Nov 1 14:06 CST 2003
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      You are brilliant, nOv8or,
      I tested the locks and duplicated the exact situation as you suggested. Will keep you and other folks posted when I drag my car back to the dealer next week.







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