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Battery replacement- now passenger window won't work

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  • 11 months later...
  • Moderators

Try a reboot, remove both cables from the battery (+ and -) and connect them with each other by a jumper cable for several minutes. Reconnect them and do the re-train procedure over again, also keep the radio code on hand.

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Yes I did the 10 second reset.

What was strange is that the window was up as normal but when I changed the battery I did something that made the passenger window go all the way down and stay there, the drivers window is fine. I cannot understand what made it go down in the first place.

Thanks for your thinking time.

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Yes coincidences are always a puzzle. Motor should be OK because it went down nicely. So I must have either confused it and am failing to reset or something wrong with a switch. Seems strange that it was fine before the battery disconnect etc. I am hoping that somebody has a suggestion how to un confuse it. I am not keen to dismantle the door without it being the last resort.

Any ideas gratefully received.


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This might be a long shot but, if your Boxster is a convertible, get inside, close the doors and roll both windows down. Put the top down. Wait a couple of seconds, then put the top back up and lock the safety latch. This should make both of your windows roll up automatically. Hopefully that works. Good luck and keep us updated.

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  • 3 months later...
  • 5 years later...

Hi RS,


Long shot if you will get notified of this reply.


Did you solve the issue?


I have exactly the same problem with my 986 Boxster with the drivers side window - it will not move up at all (can hear the clicks ok)


Happened after re-charging the battery.


Would appreciate any further info...



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Did you try the reset as described in post #2 from Loren?


Does the passenger window work? Will it lower slightly upon opening the door? This is to diagnose the fuse.


If passenger window operates - at all - then while both doors are closed try lowering the convertible top, wait, then raise it, see if one or both windows move to the closed position.

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  • 4 weeks later...

Thought i'd record what i found for posterity.


The issue was the driver's side (UK) door handle micro switch. I stripped the door down enough to view the window motor spindle. I could see that it was only (intermittently) driving in one direction. Thus i guessed there was a logic issue. I started exercising the door handle microswitches then i noted that I was able to get the motor to drive in both directions. Re-assembled the door and the window is fine now. I guess that the circuit 'thought' that the window was already fully up and would not allow the motor to drive in that direction.


Hope this helps someone.

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