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View Full Version : D4 door switches / vehicle wake up bypass?



cjc_td5
15th April 2017, 10:07 AM
Does anyone know how the d4 senses when a door is open? I can't see any plunger type switches in the door frame. Is there a sensor in the door latch?

The car waking up every time a door is opened when camping is driving me insane. Anyone worked out a bypass yet?
C

Russrobe
15th April 2017, 10:20 AM
Only solution i know of is to leave a door slightly open. Usually do this to the tail gate.

Don't like doing this much when camping though. Prefer to keep the ants outside.

cjc_td5
15th April 2017, 10:31 AM
Its the mice that have caused the most havoc with food previously that I get most concerned about.

I have had a look at if there is an appropriate fuse that can be pulled (or switched) to disable the audio amp & screen, but I presume that would mean loss of audio presets as well?

cjc_td5
15th April 2017, 10:33 AM
I leave the tailgate open but the car still wakes when I open a front door??

Ishapiro
15th April 2017, 12:50 PM
Does anyone know how the d4 senses when a door is open? I can't see any plunger type switches in the door frame. Is there a sensor in the door latch?

The car waking up every time a door is opened when camping is driving me insane. Anyone worked out a bypass yet?
C
I have been struggling with the same ever since I bought my LR4. when camping for a week, kids opening and closing the doors all the time will kill the battery in just 4-5 days.

I heard there is a "showroom" mode the car can be put into. Hope that some day IIDtool will have that option.

rocket rod
15th April 2017, 03:24 PM
I always left a door open until bed time, that way you can open any door and it wont matter otherwise use the tailgate to gain access to everything where possible as it doesn't activate the startup procedure. I haven't found anything with a GAP tool to disable this.

cjc_td5
15th April 2017, 04:06 PM
Looks like without overthinking it (again 😀😀) the easiest solution would be to wedge a door slightly open, just enough to trigger the sensor but not enough to encourage wildlife. A rag in the jam to hold it open and a ocy strap loosely onto the roofrack to stop it opening too far.....

A solution found whilst sitting in a caravan park! 😂😂

l00kin4
15th April 2017, 06:01 PM
Chris, the way I handle this is to disable the interior lights (press centre button in front light for about 5 secs, until it flashes twice) then leave the top tailgate closed but not latched. The car will switch off after a little while and opening doors doesn't bring the computers to life.
David

cjc_td5
15th April 2017, 07:16 PM
Chris, the way I handle this is to disable the interior lights (press centre button in front light for about 5 secs, until it flashes twice) then leave the top tailgate closed but not latched. The car will switch off after a little while and opening doors doesn't bring the computers to life.
David
Not with mine David. I can have the upper tailgate up and the car will wake if I then open a door.

DiscoJeffster
15th April 2017, 07:34 PM
Agree. Tailgate on mine seems disconnected to the doors. I turn off the interior light also and leave a door ajar.

l00kin4
15th April 2017, 09:45 PM
Not with mine David. I can have the upper tailgate up and the car will wake if I then open a door.

Uh ok. Maybe I've got that wrong. I'll check it tomorrow..

JonW
16th April 2017, 06:14 AM
Tailgate is served by a different logic as the body computer will allow height changes with the tailgate open but not the doors.
As far as killing the battery is concerned, I dont reckon the dealers know anything either as 4 out of 5 D4's I looked at when buying had low battery warnings current when the car woke up.

Solution is to buy a 60w solar panel and reg or a solar blanket and connect it to the car.

cjc_td5
16th April 2017, 10:28 AM
I don't think mine will make height adjustments with the tailgate open.

Solar panel won't help when making daily camp stops, ie at night 😉😉

l00kin4
17th April 2017, 10:15 PM
Uh ok. Maybe I've got that wrong. I'll check it tomorrow..
Sorry for the bum steer Chris, that was wrong. I could have sworn... anyway. Back to the original question.
I had a look at the manual (an older version admittedly- I'll check the later one later) and the door ajar switch is incorporated into the door latch mechanism. There probably is a way you could bypass it but may not be simple. It says a ground is disconnected from the central junction box when it senses the door being open.
Mine will definitely do a vehicle initiated height change with the tailgate open. Not sure about driver initiated.
David

cjc_td5
17th April 2017, 10:46 PM
Sorry for the bum steer Chris, that was wrong. I could have sworn... anyway. Back to the original question.
I had a look at the manual (an older version admittedly- I'll check the later one later) and the door ajar switch is incorporated into the door latch mechanism. There probably is a way you could bypass it but may not be simple. It says a ground is disconnected from the central junction box when it senses the door being open.
Mine will definitely do a vehicle initiated height change with the tailgate open. Not sure about driver initiated.
David
Cheers David, no worries. It seems the easiest workaround appears to be just leaving one or more doors slightly ajar, on the first latch not fully closed. This is enough to keep the vehicle asleep and also keep the visitors out 😊.

Need to check if this keeps the puddle lights on though....

Graeme
18th April 2017, 05:50 AM
There probably is a way you could bypass it but may not be simple. It says a ground is disconnected from the central junction box when it senses the door being open.You could tap into the wiring to fit a switch to connect all 4 door ajar wires to ground, with diodes to keep the signals isolated when the switch is off. Alternatively just tap into 1 door's wire and only use that door.

l00kin4
18th April 2017, 09:18 AM
Cheers David, no worries. It seems the easiest workaround appears to be just leaving one or more doors slightly ajar, on the first latch not fully closed. This is enough to keep the vehicle asleep and also keep the visitors out ��.

Need to check if this keeps the puddle lights on though....

'Camping mode' (deactivating the lights) should keep the puddle lamps off...

haydent
13th September 2025, 11:19 AM
Just to answer the opening question as I had the same question and found this thread, I was trying to test my door lock mechanism with all the door internals removed from the door and plugged back in on the outside of the door. The car wont try and lock itself if the door is detected as open.

There is a micro switch in the door latch mechanism, the slotted plate that hold the door closed, that you can rotate by hand or screwdriver as if you are the bar attached to the car body, as if closing the door.

There are 2 latched positions that the rotating plate will stay at, it needs to be in the 2nd furthest to be regarded as closed.

By doing this i was able to get the car to lock itself with the door open.

DieselLSE
13th September 2025, 12:20 PM
This may help.

discomatt69
14th September 2025, 07:39 AM
This may help.
This won’t work on my 2013 D4 and I suspect all D4’s
i have drinks fridge in the L/H rear and the oven and 2nd battery on the R/H side with the 2nd row of seats removed. Because of this setup we are constantly in and out of the car when camping so have tried all options with the doors to stop the whole system waking up
If we leave the rear doors ajar so we can going and out of the rear all good it won’t wake up the whole system with the door on the first latch
if we then open the front doors that are fully closed it wakes the whole system every time
The only way to stop it is to leave all doors ajar
when camped up for a extended period just put the solar blanket onto the car battery every 2-3 days for a little while and have never had a flat battery
I am certainly not interested in pulling apart every door and butchering the watering to makes switchable option, the less mods to any vehicle the better and more reliable it will be is my rule of thumb

DieselLSE
14th September 2025, 09:48 AM
This won’t work on my 2013 D4 and I suspect all D4’s
i have drinks fridge in the L/H rear and the oven and 2nd battery on the R/H side with the 2nd row of seats removed. Because of this setup we are constantly in and out of the car when camping so have tried all options with the doors to stop the whole system waking up
If we leave the rear doors ajar so we can going and out of the rear all good it won’t wake up the whole system with the door on the first latch
if we then open the front doors that are fully closed it wakes the whole system every time
The only way to stop it is to leave all doors ajar
when camped up for a extended period just put the solar blanket onto the car battery every 2-3 days for a little while and have never had a flat battery
I am certainly not interested in pulling apart every door and butchering the watering to makes switchable option, the less mods to any vehicle the better and more reliable it will be is my rule of thumb
Did you read the pdf? It will work on all D4s exactly as written. And yes, with the camping mode switch on, opening any door at any time will not set off the pre-ignition sequence.

discomatt69
14th September 2025, 11:54 AM
Did you read the pdf? It will work on all D4s exactly as written. And yes, with the camping mode switch on, opening any door at any time will not set off the pre-ignition sequence.
Nothing to do with reading the PDF, which I did read
i have spent years camping out of the D4 and can assure you that with the rear door ajar, one or both makes no difference and the fronts totally closed if you then open a front door the whole car wakes up with all the pre-ignition sequence so therefore putting a switch on one door will not work as suggested
whether the trick with holding the centre button on the front light for 5 seconds i don’t know as I haven’t tried it so maybe that’s the difference

DieselLSE
14th September 2025, 12:46 PM
Nothing to do with reading the PDF, which I did read
i have spent years camping out of the D4 and can assure you that with the rear door ajar, one or both makes no difference and the fronts totally closed if you then open a front door the whole car wakes up with all the pre-ignition sequence so therefore putting a switch on one door will not work as suggested
whether the trick with holding the centre button on the front light for 5 seconds i don’t know as I haven’t tried it so maybe that’s the difference
Hang on. Are you confusing the interior light operation (which, as you say, can be toggled on/off) with the pre-ignition sequence? The two are not related. I can positively, absolutely and categorically state that once a rear door has been left ajar (or the camping mode switch set to on) and the initial pre-ignition sequence has timed out (about three minutes), then opening the front doors will not trigger a pre-ignition sequence. Opening a front door will, however, operate the interior lights (if toggled on - I always leave them toggled off) and the puddle lights which is most annoying.
I installed the camping mode switch in July 2024 before my last Simpson crossing and various other trips and it works as per the pdf.
It's possible that your 2013 D4 is programmed differently to my 2013 D4. The wiring will be the same, but perhaps yours is configured differently somehow.

LRD414
16th September 2025, 08:58 PM
I’ve installed a “camping switch” exactly as per DieselLSE guideline to my 2014 D4. The switch on a single door that mimics “door open” signal prevents all system wake-ups when any other door is opened or reopened after the initial sequence times out. Works perfectly and is one of the best mods I’ve done, always found it really annoying to have to keep a door slightly ajar while at camp. Note that I only ever had to keep one door ajar, any door, and no other door opening would set it off so the behaviour now with switch is the same, just that you can fully close all doors and open at will. Just need to remember to turn switch off when you want to lock the vehicle

Scott