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Driver's Side Rear pass. door won't unlock

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Mr. Detail
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Driver's Side Rear pass. door won't unlock

Post by Mr. Detail »

Hello all.
Just wondered if there is any easy way or perhaps I should say the best way to figure out why the three other doors on my S70 will open with the key but the one left rear one will not. Is this a problem inside the door panel or is it the switch up front? Not sure where to begin.
Thanks! :?
scot850
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Re: Driver's Side Rear pass. door won't unlock

Post by scot850 »

If the door opens when the pull button on the top of the inside door panel is lifted, then the most likely issue is the solenoid in the door lock mechanism has failed. There are people who have repaired them by disassembling them to service and repair, but they are not always able to do so. It will depend on your level of confidence in repairing stuff like that. The door may lock or un-lock with the key but if it only does one or none it is most likely broken.

The usual easiest way is to get a used one and fit it instead. If you find a junkyard with this era of Volvos then they are usually fairly cheap. New ones are silly expensive.

It is a fairly common issue, more often affecting the passenger front door, but I find one of the biggest causes is folks grabbing the handle before the door is opened which breaks a plastic part in the mechanism.

The only other issue could be broken wires in the harness into the front of that door. With age and flexing the plastic wire covering becomes brittle and can break individual wires. Failed lock is most likely issue.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
Mr. Detail
Posts: 390
Joined: Wed May 03, 2006 11:21 am
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Re: Driver's Side Rear pass. door won't unlock

Post by Mr. Detail »

Thanks Neil for that detailed reply.
So when I find a salvage yard do i ask for a rear door "solenoid" or do i ask him for a "door lock mechanism"?
joejoethedogfaceboy
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Re: Driver's Side Rear pass. door won't unlock

Post by joejoethedogfaceboy »

Door lock assembly / actuator : like this https://www.amazon.com/OES-Genuine-Asse ... B001G7UQMS

If it only happens when it is hot out, then it may be the actuator motor (solenoid). Have a look at Roberts video, but only attempt if you are comfortable with ending up with a completely broken lock!

I bought a used actuator from eBay once and it ended up failing pretty quickly with the actuator motor issue, so consider yourself warned that you may only get a limited amount of time from a junkyard pull.

I eventually ended up cracking all 4 actuators opening and doing the repair described by Robert and they have made it through the Texas summer heat!

-Joe
2012 XC60 3.2
2012 S60 T5
2004 XC90 2.5T (SOLD 11/2017)
1999 S70 GLT (24hrs of Lemons bound...)
scot850
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Year and Model: 2000 V70 R
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Re: Driver's Side Rear pass. door won't unlock

Post by scot850 »

It has many different names, but I guess the most well known one it the 'door lock actuator'. These are unique to each door so make sure you ask for the correct one.

Our great friend Robert (rspi) has a great how to video which may help clarify what you are looking for:



This YouTube video shows how to fix it if you want to try:



How to test it for operation:



Here is one on Ebay for example. Be careful which one you buy as there is a black handle backing plate and a beige one. You can transfer the handle mechanism if you need to.

https://www.ebay.com/itm/VOLVO-Drivers- ... SwtG1atvxT

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
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