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  1. #1
    Join Date
    Jul 2010
    Location
    Rugby UK
    Posts
    381

    Default Door Locks and flashing lights to confirm locking/unlocking

    The tailgate on my 01 stuck shut I had to brake the interior tailgate trim to get at the lock before I could open it. The solenoid was jammed in the closed position and I subsequently freed it. However I fitted a donor tailgate lock and trim from a seven seater which has an interior handle to open the tailgate from inside (there is also a key operated exterior tailgate lock which I reluctantly left out - because they didn't save the key). So, now all doors are locking and unlocking including the tailgate (I swear the 'new' lock is stronger/heavier) but my memory is that before the change when I operated the door locks via plip key the direction indicators would flash twice to indicate open and once for closed. Also if just the tailgate was opened then when it was shut it would lock and the lights would flash to confirm. Now the lights only flash when unlocking, on locking nothing (but the doors all lock). Any thoughts anyone?

  2. #2
    Join Date
    Aug 2017
    Location
    Pleasanton CA USA
    Posts
    415

    Default

    The usual cause is that one of the 6 door-closed sensors is reporting in "door-open" during locking. Likely either the tailgate or the hood. The software is set up to flash the turn signals to indicate the car is securely locked. I remember from my '04 XC70 that, if the tailgate was hanging open when I hit the "lock" button on key fob, the triggering event to send the flash was the tailgate closure (completing the door-closure sensing requirements).

    Check for a good ground connection to the tailgate latch-lock assy.
    2013 XC70 T6 Flamenco Red (hers)
    2015 XC70 T6 Seashell Metallic (his)
    past: 13 Volvos going back to '74 242 sedan

  3. #3
    Join Date
    Jul 2010
    Location
    Rugby UK
    Posts
    381

    Default

    Thankswhen the rain abaits I will check out the latch-lock is grounded.

  4. #4
    Join Date
    Jul 2010
    Location
    Rugby UK
    Posts
    381

    Default

    So during the week I freed off the stuck solenoid of the original tailgate actuator and for interest checked the microswitch is working (using a meter) telling the security system the tailgate is closed and it is. The donor vehicle actuator has a much more substantial looking solenoid and somewhat different mechanical parts through which the actuator rods pass from the opener latch and interior handle, it also has a lever visible when hatch open near the lock pawl which seems to be a child lock safety catch. I checked the microswitch on this and it's working too. The tailgate locks and unlocks on both general lock/unlock buttons and the tailgate button but the direction lamps don't flash on lock only unlock. I am completely stuck with this. I seems too coincidental that between the actuator sticking requiring a teardown and replacement that on or more wires in the tailgate loom have severed. Having got tailgate back together and working I really don't want to tear down any more of the cargo area to continuity check the wires. The status indicator lamp on the dashboard is flashing once a second when locked: alarm is connected, so I will live with it for now.

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