C5 tailgate lock

citronut · Post by **citronut** » 03 May 2011, 07:59

what if any are the usual tailgate locking/unlocking faults and fix's,

a freind of mine has an 03 2.0 HDI 90 estate,

i havn't looked into it as yet,

he says it wont unlock with the plip but the rest of the car does,

the split tailgate opens with the button under the rear wiper, and it will open useing the button inside the car,

regards malcolm

Trainman · Post by **Trainman** » 03 May 2011, 09:46

Malcolm,

I'm not sure if they are the same, but, it could be worth having a look at this http://www.frenchcarforum.co.uk/forum/v ... &start=105

wheeler · Post by **wheeler** » 03 May 2011, 17:45

The tailgate doesent actually lock when you press the lock button on the plip, all it does is the BSI ignores the open request fron the tailgate microswitch. From what your saying just sounds like a faulty microswitch fault to me, easy enough to test, just disconnect it & short the 2 wires, if it pops the latch open then the switch is faulty.

citronut · Post by **citronut** » 03 May 2011, 19:26

aparently it does open/unlock if he uses the button in the car,
so could that still be the micro switch,

regards malcolm

wheeler · Post by **wheeler** » 04 May 2011, 22:18

A mk1 C5 has a tailgate release switch inside the car ??

citronut · Post by **citronut** » 05 May 2011, 07:19

ok wheeler
but is it still possible for the micro switch to be at fault, even though it will unlock useing the in cab switch/button,

regards malcolm

wheeler · Post by **wheeler** » 05 May 2011, 08:29

I dont think i've ever seen a mk1 C5 with a tailgate open switch inside the car but in theory if it has one & it's opening with this then yes it's still possible that the tailgate switch is faulty as you would be bypassing the tailgate switch by using the dash switch. Like i said should be very simple to check the tailgate microswitch anyway.

Post by **Paul-R** » 05 May 2011, 09:16

wheeler wrote:I dont think i've ever seen a mk1 C5 with a tailgate open switch inside the car

Mine certainly hasn't!

I'm intrigued...

citronut · Post by **citronut** » 05 May 2011, 13:08

i have not seen it myself but the owner tells me it does, and its only am LX as well,

maybe he means the door lock panick button,

regards malcolm

citronut · Post by **citronut** » 16 May 2011, 18:46

update to this fault now i have had a look,

the car does have a boot unlock only button on the centre consoul, which does unlock the tailgate whilst the ignition is switched on,

the plip works on the rest of the car unlocking and locking every time,

my freind discoverd by accident the button under the rear wiper armfor openning the tailgate glass only, this does not operate either,

i have had an ohm meter across the pins of the main tailgate switch,

i think i am right in saying the switches send a signal to the BSI which then tells the tailgate to open???

regards malcolm

wheeler · Post by **wheeler** » 16 May 2011, 19:44

citronut wrote:the car does have a boot unlock only button on the centre consoul, which does unlock the tailgate whilst the ignition is switched on

Exactly where abouts is this button ? still cant think that i've saw a mk1 C5 with this switch.

citronut wrote:my freind discoverd by accident the button under the rear wiper armfor openning the tailgate glass only, this does not operate either

Nothing unusual there then

citronut wrote:i have had an ohm meter across the pins of the main tailgate switch

What did you find ?

citronut wrote:i think i am right in saying the switches send a signal to the BSI which then tells the tailgate to open???

Thats correct.

citronut · Post by **citronut** » 17 May 2011, 08:32

the tailgate opening button is to the left hand side on the centre consoul,

the main switch prooved fine with the ohm meter, full continuaty on every press,

and shuving the DIS LEXIA up it to my supprise on a GLOBAL test only came back with one fault found, this was to do with the radio arial,

regards malcolm