2002 lexus is200, avant guard 5.5

so are you saying the only way is to adapt the circuit board which is what the installer was advised however he has found a way around this i think its similar to the way in the link above but without the relay. i was thinking of changing it to this if it gave me my door lock switch back

Which part of the Uk Do you work in

Andrew 

Hi

Just so i can get your take on this i have cheked how the system was installed, the installer has taken the Door lock wires Red & Green and routed them through the new alarm unit, thus enabling all 4 dors to lock an unlock without touching the existing door wiring, down side of this like stated before there is no lock or unlock from the drivers door or drivers door lock.

The feature i want to re enable is the drivers door lock switch thus enabling unlocking and locking whilst driving mainly the unlocking feature seems a bit daft leaning over the car to let someone into the car (due to car locking when pulling away)

here is my thinking correct me if im wrong, if i open up the drivers doo/window control unit modify the switch connection point to alow me to have 2 wires coming from the lock/ unlock switch back into the car and then wiring up to a relay to give the positive trigger to unlock the doors once locked diode to protect the alarm module from current feeding back into the brain of the unit essentially the wiring on the relay would be

Simple relay to convert negative trigger to positive trigger then the output of this to second relay connected up as follows

pin 30 Door lock wires (going to the doors)

87a Clifford Unlock wire

87 New unlock wire from relay switch 

85 Ignition feed only (makes sure the car cant be unlocked by a coat hanger etc

86 Ground input

What do you think ?

i have been advised that if i reconnect everything back up and then tap into the 3 wires going to the door lock ecu and do the mod with a single relay as shown in the link above this may work, im sceptical as i dont realy want to blow the door lock ecu up as not sure what else is controlled by this if nothing then im not to fussed,

Cheers

Andrew

Just out of curiosity which bits do you have to mod inside the Door lock control unit ?

Cheers

Andrew

Hi Howie

Sorry for the delay been a busy few months can i just confirm on the above post, that the box you are refering to is the MPX control unit located in the Yellow box?

I have this open the only 2 big tracks that stand out are the ones coming from the realy are these what you are talking about i can upload a picture if this will make it clear from what i am saying ?

bit confused on the last part of the above post i get the wiring you are talking about but the +12v feed to purple etc  with out reading the manual thought i would get you to clarify if thats ok

Cheers

Andrew

Ok so had the box apart just to confirm this is the section you meant howie ?