Electrics: Driver's Side Door Mirror and Locks Master Switch

[ASt85]

The original driver’s side front window/lock & etc of my 2004 V70 SE T5 had a broken mirror joy stick the cover of which was split in to two pieces, the driver’s side mirror adjustment was intermittent as was the green mirror button indicator light. The passenger side worked normally on mist occasions even though it was a bit of a fiddle to get the joy stick to work.

I purchased a tested, guaranteed working replacement from a breaker, but on installing none of the switches worked.

Checking on the breakers eBay web store to request advice there was a statement -
“Door switch assembly. Volvo V70. Beware, if you try and fit a complete used switch assembly it has to be coded on to the vehicle. If you remove the switches from the assembly and fit individually as required you do not need to code them in to work” and whilst everything was functional before I replaced the driver’s side front door switch, on installing none of switches worked, on re-installing the original switch all the switches worked. It would appear the statement is correct.

A simple reset or recalibration doesn’t seem to work probably because there is no communication with the switch i.e. the door windows will not power up or down, the left/right mirror buttons don’t light the indicators plus the joy stick, child lock and master lock are inactive. the switch is in effect "dead".

I can locate the error codes & readout re lack of communication with the O/S mirror motor(s) etc using VIDA and DiCE. I assume that the coding must be done by a dealer or a specialist with the Volvo link or is there some work around, other than swapping the switch gear from the breaker’s switch into my old switch?

[SwissXC90]

Did you fit a switch unit with identical part numbers?

The bus addresses change over the years, you must get one with same part number of of same vehicle make and model and year

From all my research no coding is needed on the drivers door module

[Clan]

Originally Posted by ASt85

The original driver’s side front window/lock & etc of my 2004 V70 SE T5 had a broken mirror joy stick the cover of which was split in to two pieces, the driver’s side mirror adjustment was intermittent as was the green mirror button indicator light. The passenger side worked normally on mist occasions even though it was a bit of a fiddle to get the joy stick to work.

I purchased a tested, guaranteed working replacement from a breaker, but on installing none of the switches worked.

Checking on the breakers eBay web store to request advice there was a statement -
“Door switch assembly. Volvo V70. Beware, if you try and fit a complete used switch assembly it has to be coded on to the vehicle. If you remove the switches from the assembly and fit individually as required you do not need to code them in to work” and whilst everything was functional before I replaced the driver’s side front door switch, on installing none of switches worked, on re-installing the original switch all the switches worked. It would appear the statement is correct.

A simple reset or recalibration doesn’t seem to work probably because there is no communication with the switch i.e. the door windows will not power up or down, the left/right mirror buttons don’t light the indicators plus the joy stick, child lock and master lock are inactive. the switch is in effect "dead".

I can locate the error codes & readout re lack of communication with the O/S mirror motor(s) etc using VIDA and DiCE. I assume that the coding must be done by a dealer or a specialist with the Volvo link or is there some work around, other than swapping the switch gear from the breaker’s switch into my old switch?

that is a security function of your car , used units don't work and cannot be coded by the dealer . You need to take your "new" switch units apart and use parts from it to repair your broken switches ..

[ASt85]

Originally Posted by SwissXC90

Did you fit a switch unit with identical part numbers?

The bus addresses change over the years, you must get one with same part number of of same vehicle make and model and year

From all my research no coding is needed on the drivers door module

Thanks SwissXC90
Definitely the same part number & for a V70, but I must admit I didn't check the production date on the switch.....I'll have to wait for the rain to stop before I can check it.

Originally Posted by Clan

that is a security function of your car , used units don't work and cannot be coded by the dealer . You need to take your "new" switch units apart and use parts from it to repair your broken switches ..

That looks to be the way forwarded then, a little bit like the "security protected" radios then........
..............I appreciate the security element but, I HATE CAN-BUS systems which rack up the dealer sales, especially when they have been deleted from the "catalogue"

[Clan]

Originally Posted by ASt85

Thanks SwissXC90
Definitely the same part number & for a V70, but I must admit I didn't check the production date on the switch.....I'll have to wait for the rain to stop before I can check it.



That looks to be the way forwarded then, a little bit like the "security protected" radios then........
..............I appreciate the security element but, I HATE CAN-BUS systems which rack up the dealer sales, especially when they have been deleted from the "catalogue"

It is for your own benefit , it is a security feature , otherwise an incentive for cars to be stolen and broken for spares , volvo have always had one of the best cars for security . There is no reason why you can't buy a new door module if you want one ...

[ASt85]

Originally Posted by Clan

It is for your own benefit , it is a security feature , otherwise an incentive for cars to be stolen and broken for spares , volvo have always had one of the best cars for security . There is no reason why you can't buy a new door module if you want one ...

Thanks Clan, I do appreciate the security built in to a Volvo and you are right I could buy a new door module if it was needed, nor would I wish to take issue with your considerable and valued knowledge regarding Volvos.

However, consider the book price of a new master switch, since it would have been manufactured "recently" add the cost of coding it to a 15 year old car; the rebuilding of the old one with salvaged parts as you say "use parts from it to repair your broken switches" does make a lot more sense it also negates the "stolen parts security" justification by the manufacturer.
Consider also that if Volvo parts security was the sole issue, parts to the security system like door locks or for that matter the expensive audio systems wouldn't be swappable within the same manufacturing or year run without a problem.

The door lock is penetrable so it is not as "safe" a system as people would have us believe, the steering lock is no barrier to a determined or even amateur thief nor the DIY repairer when the lock jams, or for that matter the ignition lock itself, or bypassing the antenna ring to start the motor up with a "dead" uncoded key or when no key is available.

[barrybritcher]

They aren't all totally inoperable. I fitted a 05 module to an 07. All works except mirror in is mirror out and vice versa. Just fit as close year as possible

[ASt85]

Originally Posted by barrybritcher

They aren't all totally inoperable. I fitted a 05 module to an 07. All works except mirror in is mirror out and vice versa. Just fit as close year as possible

The mirror fold switch for my 2004 V70 SE T5 is in the console below the radio & aircon and despite repeated attempts by pulling the fuse to get the off side to fold inwards at the same time as the near side one, every so often it fails to move at all when it should fold in. Then, when I unfold the near side it promptly moves inwards.........pull the O/S fuse, fold in the nearside, replace the fuse, it then performs normally for a few days. Next thing is the whole cycle repeats itself.

I think there is probably a poor connection in the door loom, quite probably between the door and the A pillar, but as yet have been unable to track it down. I'm hoping that repairing the door master switch will reveal other possible causes or correct a continuity problem. Most of the electrical problems I've encountered with this car are driver's side problem which either means the drivers side got considerably more abuse than the passenger side or it took a hit at some point.

The driver's side rear wing has somewhat crazed paint which a repairer tells me could be where a rattle can spray has been used even though it is an exact colour match for the whole of the rest of body; having had the rear cargo area off side panel out to repair the fuel flap lock I know there is no evidence of a physical repair to the metal. The door gaps are all parallel and have the same gap(s) as my 2001 V70 Torslanda. The body has the sort of scratches that you'd expect from keys around the drivers door lock, the front passenger handle area has the sort of nicks you get from a ring wearer, plus the odd shopping trolly dink here and there. The underside show no signs of impact damage or distortion.

The problems I've encountered seem to stem from lack of care by the previous owner or very poor servicing - eg oil level was just below the cross hatching despite invoice evidence of an oil and filter change by a Volvo main dealer doing the work less than 3000 miles before I bought the car. When the oil and filter were changed just after I bought the car, the cold dip was just below the cross hatching before I warmed the engine up to change the oil. The filter was an Volvo OEM but partially clogged, so one wonders whether the dealer had been just sucking out the oil, under-filling and charging for a new filter and the "correct" volume of oil - when one or both hadn't been changed, there is no evidence of oil leakage around the engine or on the under tray, the steering is light and noiseless and the fluid is the right colour, the revs drop to idle as soon as you take your foot off the loud pedal, the transmission fluid looks and smells good - so in that respect the correct servicing has clearly been done. Yet the filter wouldn't be partially clogged within 3k miles nor would the correct oil have the consistency of tepid treacle if the oil had been changed as stated. The only other similar experience was the Torslanda's filter which was almost completely clogged having been supposedly changed by a Volvo dealer at regular service intervals over the car's entire life before I bought it.

My error in buying it having only seen and driven the car with a warm engine. Will I never learn, bit like buying a car under a floodlight when it has been raining - trouble was I had little time available and I wanted the car because of the metallic black paint, the on-board toys, the gorgeous leather if then dirty seats, the wood trimmings, the boot autochanger, SE carpet trims, Volvo OEM SE double thickness carpet boot liner etc, etc and the undoubted potential as well as it having done less than 8k miles a year since new.

As a 2.3 T5 when you put your foot down it really does have the wow factor, the performance is absolutely stunning, blistering even.

On balance, whilst the car has faults, they can be corrected. I think it worth spending the money to put it fully right, to my mind it is a keeper, which at some point I may have properly resprayed.....but that would be a metallic or even metallic pearl aubergine plus as the Torslanda, sailed through the MOT with no advisories.

[barrybritcher]

By in out i meant angling the glass in out with the joystick on the ddm

[ASt85]

Originally Posted by barrybritcher

By in out i meant angling the glass in out with the joystick on the ddm

My offside joy stick control is intermittent - so I resort to dropping the window and adjust the mirror by hand.