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rosey58

'05 Focus Tailgate/boot Problem

41 posts in this topic

My Focus Estate has the switch not working issue, but the key fob opens the tailgate.

I just took the tailgate bits apart to investigate.

Water ingress seems to be the issue, an additional tests you may want to try, disconnect the switch where it joins the wiring loom.

When you reconnect, if you hear the opening mechanism operate it suggests the switch is permanently closed.

if its similar to the mk1 when you remove the 4 screws/bolts holding the outside handle that houses the lights do you have a double sided sticky gasket? if so this is where the water gets in a new gasket will be required and the remains of the old one removed when you fit the new gasket you will notice it doesnt go all the way along in fact it leaves a gap that water gets into there are drain holes so technically that shouldnt be an issue unless it rains heavy since that handle doesnt ever really need to come off you could use a clear mastic or sealant to make sure it stays water tight or if you can some of that sticky stuff they use to put the padding behind the door card the black stuff any of these will seal it and stop the water

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if the boot is releasing when the brake pedal is pressed there is most likly a short circit in the tailgate wireing causing the tailgate solinoid the activate when the brake light circut is powered up.

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My 2005 Focus has developed a similar problem ie: the solenoid opens when the brake pedal is used. I have discovered that the solenoid operates under the following conditions. Car is stationary with the ignition turned on, Brake pedal is depressed, and the solenoid operates only when the brake pedal is released.

I thought about a wiring fault but these conditions seem to rule that out and my wiring seems in good order and ther is no water ingress.

has anyone experienced the same problem?

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hello,

i have the exact same problem with the boot opening with the brake pedel being released! the switch works on the outside. Ive pulled the boot liner off and you can disconnect the micro switch and this has no effect on the issue. there doesnt seem to eb much, if any, water ingress.

im stuck as to what to look at now as this is obviously not an isolated issue. and would like to know how to proceed. im thinking of swapping the lock mechanism out but as this appears to work (although at the wrong times) i dont want to spend 60 quid on something thats probably not the issue.

does anyone else have any thoughts? are there any common issues with the wiring loom rubbing in the boot?

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hello,

i have the exact same problem with the boot opening with the brake pedel being released! the switch works on the outside. Ive pulled the boot liner off and you can disconnect the micro switch and this has no effect on the issue. there doesnt seem to eb much, if any, water ingress.

im stuck as to what to look at now as this is obviously not an isolated issue. and would like to know how to proceed. im thinking of swapping the lock mechanism out but as this appears to work (although at the wrong times) i dont want to spend 60 quid on something thats probably not the issue.

does anyone else have any thoughts? are there any common issues with the wiring loom rubbing in the boot?

Hi Andybrad

Thanks for the feedback Nice to know mine is not an isolated incident.

I discounted a wiring loom problem as the fault occurs when the brake pedal is released., plus my loom seems in good order.

I have still not got a lot further other than I left my inside plastic tailgate liner off for a couple of days so that I could disconnect the latch assembly easily and drive without it opening, only to find that the fault has now disappeared.

this leads me to think it may well be a faulty latch assembly which is being affected by condensation after the cold weather?

Apparently there is an electronic module within the assembly which has a microswitch which plays up?

I understand electrics but not electronics, however damp and electronics dont mix.

I am going to remove the latch assembly and take off the plastic covers and see if there is any obvious damage.

As there seems to be a common problem with this latch I am also looking into ways of insulating the inside of the outer skin to the tailgate with something like thin polystyrene in the hope that this cures any condensation problems. I will post the outcome asap but sorry I am a bit busy to tackle it at present. cheers John.

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RIGHT,

i took the boot lining out on the passenger side. found a multi connector and took it appart and sprayed with a bit of 3in1 oil. went to the gym. when i got back it seemed to be sorted. happy days. I took the oppertunity to give the lock mechanism a good dousing with it as well.

seems to be sorted but i dont know if its just because its dried out a bit. either way its working

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RIGHT,

i took the boot lining out on the passenger side. found a multi connector and took it appart and sprayed with a bit of 3in1 oil. went to the gym. when i got back it seemed to be sorted. happy days. I took the oppertunity to give the lock mechanism a good dousing with it as well.

seems to be sorted but i dont know if its just because its dried out a bit. either way its working

Thanks for that.

Hav'nt tried the connector yet but sounds like a good idea. In the mean time I spoke to my local ford dealer who was suprisingly helpful. He indicated the same connector but also said that the Gen board which is located under the dash passenger side gives loads of wierd electrical problems. It to is affected by damp and green deposists can be found which causes electrical tracking this makes sense to me but I hope that is not my problem as it costs about £325 for the part and it has to be programmed back in. you have to be careful when disconnecting multi connectors on this board as for instance the green one will require the key code to the radio if disconnected.

Happy hunting.

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I have got a 56 reg focus zetec hatch.

I do not have the tail gate switch problem but i have noticed while lifting the tailgate up that there has been water ingress in the number plate lights. (some dried up brown deposit, water has been there before)

Is this the start of the tailgate switch problem?

Does anybody know where does the water enters the tailgate to damage the tailgate switch?

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I have got a 06 focus saloon I could not open my boot, some times it would open then it would not, I took the lock apart lock was ok

if I closed the boot half way it would work if I shut boot fully it would not work also the boot light stopped working, so I started looking at the wiring

and found where the wiring goes from the boot lid to the boot through the (rubber boot) the wiring was broken and frayed

I have now sorted the wiring out and all is working fine now

Hope this helps some one out

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Nice write up Catch. Would be interesting to hear the theories on why disconnecting and subsequently reconnecting the battery causes this problem to rear it head?

As said, my next line of attack will be to clean the switch contacts as i suspect them.

Hi

I removed the rubber cover on the Tailgate On my Estate water came out of it.I had to replace the Switch (£30).Water was getting in on the Plastic Trim that holds the Reg Plate lights etc i put clear sylicon sealer around the trim before i tighned the 4 nuts up this has cured it and there is no water getting in.

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Hi All

Seem to have solved this problem of releasing the brake pedal unlocking the tailgate and the release switch not working.

Pull back the near side rear boot liner and there will be a big black connector. Just moving the bunch of cables operated the tailgate lock. When I pulled it apart there was a little water inside. Liberal spray of WD40 on both sides of the connector and then reassembly and everything works fine.

It is a bit difficult to get the trim back into place. I had to remove the trim moulding across the rear of the inside of the boot. It is only held in by some push-in plastic clips which are a bit of a challenge.

All this recent rain must be the cause but at least it only took a couple of sprays of WD40. I'll try some extra sealer on the gromet that the tail light wires and the screw holes as that is only place the water can have come from.

I have had to do the same to the bulb holders in the rear lights and indicators in the past to get them working again.

Thanks for you help

Regards

David

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I too have recently had the problem where the boot switch refuses to work, the boot unlatches when the break pedal is released, and the keyfob button works okay. At first I thought it must be the boot switch unit, not helped by the fact that the problem goes away a couple of days after the rain has stopped. Cleaned out the switch, no real sign of water ingress in it -- couple of days (and some more rain) later, problem reoccurred.

Have read through all the info here, and eventually homed in on the black connector block, near side, behind lots of hard to remove trim -- nothing obviously wrong with it, no sign of dampness, but touching it caused the latch to start jumping madly. Fiddled around a bit, and the latch started working normally, rear button works, no activity on break light deactivation.

Still not certain as to exactly where the problem lies -- it must be a short somewhere, there's a cable disappearing from the black connector into the reversing lights / rear fog light assembly -- this is very low down and must constantly be exposed to kick-up moisture from the road.There was significant water ingress around the center rear break light, but disconnecting this assembly made no difference. There was slight water ingress around the tail-light assembly, particularly on the near side, indicating that moisture may have made it down to the connector block, but there's no sign on the block itself.

Will have to keep monitoring the situation -- will post back if any more determinative information.

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Found a blog on another site, tried what was suggested and it worked straight away! Here's what I did:

There is an electrical connector behind the carpet covering the side of the boot area on the passenger side (nearside) which you will need to pull back. I partially removed the plastic trim which normally supports the parcel shelf (be very careful not to break the plastic clips) then I peeled the carpet back. There is an electrical connector behind the carpet which is easily seen. I carefully separated the two halves of the connector by pushing the small tab in on the connector. I then put some Vaseline on the tip of a small screwdriver so I could smear some Vaseline on each of the connections inside the plug. For good measure I also removed the earthing screw and put some Vaseline on the eye connectors before refitting. I put everything back together and it worked fine.

Some people may need to remove corrosion or stop any water leaks as well - luckily I didn't have to.

See photos for reference.

Good luck everyone!

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post-71140-0-65791800-1452430211_thumb.j

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