Hi all. Finally took the plunge and purchased a td5 d2 (had a 300tdi off roader for a while). After spending a LONG time searching i finally found a really clean tidy example with a few niggles. Worst being a central locking issue. ALL doors will lock off the fob, the internal button and key in the door but ONLY the drivers door will unlock. Ive been told a few different things ie door lock actuators, receiver in the roof infront of rear sunroof and the bcu. Much appreciate it if Can anyone shed any light on it or have had previous similar problem. Tia
D2 Central locking issue
- Thread starter Shaun89
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sierrafery
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As long as all of them lock and only the driver's door unlocks put your ear on any other door and unlock with fob, if you hear some activity it means all the other actuators are fubar cos the lock and unlock command goes to the motors on the same wires by reversing polarity...if no activity in any other door when you unlock it can be a problem with the driver's door position switch which is the main element in the central locking sequence or the BCU... the receiver has nothing to do with that, investigation is needed
Just been to investigate. Yes you can hear activity in the doors. It sounds like the actuators are working but just wont lift the locks.
sierrafery
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So you have your answer... you need new ones or you might try to fix them but this happens due to mechanical wear so it will not last much and they are not easy to replace (except the boot) https://blog.roverlandparts.com/99-04-discovery-ii-door-latchactuator-help/
sierrafery
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BTW, you can try a trick though, unplug them one at a time and unlock, if with one unplugged the others will work it's possible that one toi be the only at fault and it's draw creates a voltage drop on the circuit and doesnt let the others work well, all the doors except the driver's are on the same circuit so a voltage drop on the circuit would affect them all
brian47
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As @sierrafery has said, if the driver's door will unlock on the fob then there's nothing wrong with the RF receiver in the roof space.
When you say "all doors", does that include the tailgate too? I presume that the doors can be opened using the handles on each door.
It certainly sounds like you have a car full of faulty latches unfortunately. They usually pop their clogs one at a time, but if the previous owner wasn't particularly bothered about them, the faults could have been cumulative.
Sadly, there's very little can be done about faulty latches other than to replace them although some have said that they have repaired them, I've tried to get into one and failed miserably.
I would be inclined to replace just one latch first off to confirm that is the state of play, say the front passenger's door. These latch assemblies aren't cheap, up to ninety odd quid new and about fifty quid second user, that's why I say just do one to see if that clear that particular door. Also each latch assembly is individual to each door.
When you say "all doors", does that include the tailgate too? I presume that the doors can be opened using the handles on each door.
It certainly sounds like you have a car full of faulty latches unfortunately. They usually pop their clogs one at a time, but if the previous owner wasn't particularly bothered about them, the faults could have been cumulative.
Sadly, there's very little can be done about faulty latches other than to replace them although some have said that they have repaired them, I've tried to get into one and failed miserably.
I would be inclined to replace just one latch first off to confirm that is the state of play, say the front passenger's door. These latch assemblies aren't cheap, up to ninety odd quid new and about fifty quid second user, that's why I say just do one to see if that clear that particular door. Also each latch assembly is individual to each door.
sierrafery
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a bit cheaper here https://www.lrdirect.com/FQM100710-...MI7ZeMuJnJ1wIVSSjTCh0cFwbUEAAYASAAEgIvAPD_BwEThanks sierrafery. Ill try unplugging 1 at a time. Ive priced the actuators and was hoping not to spend £95+vat x4
Thanks @sierrafery could be the best part of £100 saved all in all. Also a new thing its develpoed the past few days, if after a journey you jump out turn it off and leave it unlcoked even for only a couple of minutes, then jump back and turn ignition on tge hazard lights start flashing. No alarm just hazards. You then have to open and shut drivers door. Lock then unlock turn ignition on and they stop (some times after a couple of attempts.
sierrafery
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Might be an intermittent missbehaviour of the inertia switch or weak contact in it's plug
Could do with having a poke around it then maybe. Clean the contacts? Where is it located please @sierrafery
sierrafery
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It would cut the fuel in tripped status but then the indicators should keep flashing too and the fuel cut untill the switch is manually reset but if it had an intermittent cut then reset itself the hazards keep flashing untill the ignition turns on so as long as the hazards go out the fuel is not cut if you see what i mean
I can still start and drive while the hazzards are flashing though. So there must be a gremlin in there somewhere. Im thinking more and more that the bcu might be the cause assuming the central lock is controlled from there and inertia switch must come through there to open the central locking in the event of a crash
sierrafery
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Yes if you can drive it with the hazards flashing then the BCU becomes suspect...unless the hazard switch is not making tricks, unplug it and see if it helps or not
