lexus is200 alarm problem

meath4sam

01 lexus is 200 with lexus factory alarm system, as of 1 hour ago the alarm will not set using main key or second key, car will lock manualy and will start but the remote lock will not lock doors or set the alarm no flash of indicaters or nothing.it is not a batterary prob as both keys are reguraly used and were grand until lately.any replys welcome.

colm_mcm

lock the car manually, then try and unlock with the remote. if the car thinks there's a door open it won't lock with the remote, but it will unlock or attempt to unlock even if the car is already unlocked.

meath4sam

colm_mcm wrote: »

lock the car manually, then try and unlock with the remote. if the car thinks there's a door open it won't lock with the remote, but it will unlock or attempt to unlock even if the car is already unlocked.

tryed that if car is locked or unlocked key remote will do nothing apart from a flash from the light in the corner of the key.

colm_mcm

try recoding one of the keys:


1 Drivers door open
2 insert Key in to ignition -remove
3 using the central locking switch on the drivers door LOCK to UNLOCK 5 times ie forward/back counts as one
4 close/open door
5 lock to unlock another 5 times
6 insert key in to ignition
7 off to on to off .. once to add a key .. twice to rewirte.. remove key
8 after this the door locks will respond
9 while this is happening hold down the lock button on the key and press the unlock button on the key 5 times .. release and press unlock once

colm_mcm

colm_mcm wrote: »

try recoding one of the keys:


1 Drivers door open
2 insert Key in to ignition -remove
3 using the central locking switch on the drivers door LOCK to UNLOCK 5 times ie forward/back counts as one
4 close/open door
5 lock to unlock another 5 times
6 insert key in to ignition
7 off to on to off .. once to add a key .. twice to rewirte.. remove key
8 after this the door locks will respond
9 while this is happening hold down the lock button on the key and press the unlock button on the key 5 times .. release and press unlock once

Hey, I know this has nothing got to do with this post, but a quick question, if I got a 2nd key with a chip (un-coded), and tried this, will it code the key to my car without having to go through the manufacture? Would save a nice few bob! I have a 01 Corolla by the by. Thanks.

colm_mcm

that will only code the central locking, the immobiliser is a seperate procedure, and AFAIK needs the Toyota diagnostics computer to code in the immobiliser chip to the car.
Not 100% sure, check with dealer.

also procedures aren't the same for all Toyota and Lexus models, so it's unlikely that the above would code your central locking.

meath4sam

colm_mcm wrote: »

try recoding one of the keys:


1 Drivers door open
2 insert Key in to ignition -remove
3 using the central locking switch on the drivers door LOCK to UNLOCK 5 times ie forward/back counts as one
4 close/open door
5 lock to unlock another 5 times
6 insert key in to ignition
7 off to on to off .. once to add a key .. twice to rewirte.. remove key
8 after this the door locks will respond
9 while this is happening hold down the lock button on the key and press the unlock button on the key 5 times .. release and press unlock once

thanks for the help mate, tryed all above with both keys and still nothing. on one key there is also a button to pop the boot open it doesnt work ethier, i reckon i must be the device in the car that recives the signal frm the key as unlikely both keys go faulty at the same time any idea wat this is and where it is. maybe next option go to a toyota garage and see can they hook up to computer see does it see anyting wat do u think, thanks again for your help.

meath4sam

ok so today the alarm worked after i drove to work everything all worked as normal for a few hours on the way home i got the car washed and then it wudnt work so it has to be a faulty reciver in the car anyone know where this is or what it looks like????

edyc

Hi did u ever get it fixed? I'm having the same problem

dartford dave

edyc wrote: »

Hi did u ever get it fixed? I'm having the same problem

Hi their did u ever find out what the prob was and get it fixed as im having the same problem as well