lexus gs300 , 99 registered

[daveprice]

has any 1 had trouble with the immobilser on a lexus , the car has stood for a while and the battery completly died , new battery fitted ,now the red light for the immobilser flashes and wont go out , ANY IDEAS HOW TO RESET THIS ?? the car spins over but will not start , i dont fancy Lexus hourly rate , all help appreciated .

[mustard]

Does the car have the rectangle cobra alarm fob, or the oval lexus branded one?

If its the rectangle one (cobra system) they are very easy to 'spike' when jump starting, trick is to turn side lights on before applying power.

Bad news is if you've 'spiked' the unit it will require replacement IIRC

[daveprice]

it has all the buttons on the key , no other fobs with it its sounding grim now !!

[mustard]

daveprice said:

it has all the buttons on the key , no other fobs with it its sounding grim now !!

Ignore me.... I was thinking Series 1, your quite correct in respect Series 2 has all functions on the key, cant recall any pecurilarites on Series 2's

[daveprice]

someone i know suggested i may have to leave the ignition on to reset the immobiliser??
how long for tho??
Thanks for the other replys .

[mustard]

daveprice said:

someone i know suggested i may have to leave the ignition on to reset the immobiliser??
how long for tho??
Thanks for the other replys .

That does sound vaguley familiar deep in the distant depths of my brain..... worth a shot for an hour or so

[splatspeed]

the immobiliser will have a reset procedure to reset the key to the immoberliser and sync

this is because you have run down 2 batterys

the main battery and th immobiliser battery

[daveprice]

thanks for the info ,but how do you sync them together ?? the battery in the key seems fine , works the locking etc .

[GregE240]

Dave, have you checked on www.lexusownersclub.co.uk?

There might just be what you need on there....

[daveprice]

thanks for the owners club thing , ive registered but trying to post a question is a nightmare , so still no go on the 300 .