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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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UEM Checking and REMOVALViews : 852 Replies : 5Users Viewing This Thread : |
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Sep 26th, 2020, 18:28 | #1 |
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UEM Checking and REMOVAL
It would appear that the UEM may have a Dry joint , locking with the remote has stopped and sometimes the key only opens the drivers door (has to be relocked then unlocked to open ALL doors) What is the Procedure please of taking this component apart , this car has a Telephone which I think is also in the mirror for Speech .
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Sep 26th, 2020, 18:40 | #2 |
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I don't know if the problem is with the UEM. Try first locking/unlocking dr door three times. https://www.matthewsvolvosite.com/fo...ic.php?t=24386
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Sep 26th, 2020, 19:00 | #3 |
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Have you checked the car parked somewhere else to discount local interference?
If I remember right the entire mirror and interior light assembly unscrews from the roof, screws in mine where under the light diffuser. Disconnect the cables and it’s out. The mirror housing splits apart, gently pry at the joint and it will unclip. The UEM is the board inside it. Once you get the board out, (mine was very stuck on double sided sticky, needed careful application of a heat gun to soften it). You’ll see a small daughter board soldered at right angles to the main one. This smaller one is the keyfob receiver, and if necessary can be swapped. The long board contains all the coding and can’t be swapped. |
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Sep 28th, 2020, 16:41 | #4 |
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Thanks for the replies , done the Key 3 times, nothing, parked over a 30 km distance nothing , looks like a dismantling job , but I am considering buying a RF tester (Cheap) just in case the problem is in the fob !
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Sep 28th, 2020, 17:45 | #5 |
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Don't forget the car battery disconnect
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Sep 29th, 2020, 16:12 | #6 |
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Does disconnecting the battery help with this fault ? Is it just disconnect and wait for a few minutes ? Does this bring up any warnings?
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