Faulty Alarm

jimmie1948 · September 30, 2006

hi, i've got a lexus ls400. 6 weeks ago we had a flood down our road and my car got a bit swamped. i disconnected the Battery and put heaters in it to dry it out, then left a dehumidifier in it for a week to take any moisture out. the car itself drives fine now, i have no problem other than the alarm. as soon as i connect the Battery it starts beeping and won't stop. can anyone help me or offer any advice please? thank you.

lutonmatt · September 30, 2006

i have that when ever i take the Battery off all i do is press the alarm fob about 100 times until it turns it off then the fob works of about a day then it stops and i have to go back to locking with the key

jimmie1948 · September 30, 2006

i have that when ever i take the battery off all i do is press the alarm fob about 100 times until it turns it off then the fob works of about a day then it stops and i have to go back to locking with the key

thank you mate, i'll give it a go and let you know what happens!!

GoldfingerLS · September 30, 2006

Hi Jimmie,

Which year/model it your car ?

On my Mark4 LS400 the correct way to re-connect the Battery once you have taken it off is to put the key in the ignition (a key which is progammed to start the car) and turn it to the 'ON' position and then connect the Battery. If I dont put the key in and turn it to the ON position, the alarm will start going off as soon as I connect the Battery because it thinks I am trying to steal the car.

Might be worth a go.

jimmie1948 · October 1, 2006

Hi Jimmie,
Which year/model it your car ?

On my Mark4 LS400 the correct way to re-connect the battery once you have taken it off is to put the key in the ignition (a key which is progammed to start the car) and turn it to the 'ON' position and then connect the battery. If I dont put the key in and turn it to the ON position, the alarm will start going off as soon as I connect the battery because it thinks I am trying to steal the car.

Might be worth a go.

thank you very much, that sounds like it might be the root of the problem!! i'm going to try it now all my neighbours are awake!!! i'll let you know how i get on.

jimmie1948 · October 1, 2006

Hi Jimmie,

Which year/model it your car ?

On my Mark4 LS400 the correct way to re-connect the battery once you have taken it off is to put the key in the ignition (a key which is progammed to start the car) and turn it to the 'ON' position and then connect the battery. If I dont put the key in and turn it to the ON position, the alarm will start going off as soon as I connect the battery because it thinks I am trying to steal the car.

Might be worth a go.

thank you very much, that sounds like it might be the root of the problem!! i'm going to try it now all my neighbours are awake!!! i'll let you know how i get on.

thanks for your advice, no joy though i'm afraid, the alarm still wails. a BMW specialist who lives down our road says it sounds like there is still water (or dampness) in the wiring. i think its going to have to go to lexus in guildford. cheers anyway!!!

jimmie1948 · October 19, 2006

Hi Jimmie,

Which year/model it your car ?

On my Mark4 LS400 the correct way to re-connect the battery once you have taken it off is to put the key in the ignition (a key which is progammed to start the car) and turn it to the 'ON' position and then connect the battery. If I dont put the key in and turn it to the ON position, the alarm will start going off as soon as I connect the battery because it thinks I am trying to steal the car.

Might be worth a go.

thank you very much, that sounds like it might be the root of the problem!! i'm going to try it now all my neighbours are awake!!! i'll let you know how i get on.

thanks for your advice, no joy though i'm afraid, the alarm still wails. a BMW specialist who lives down our road says it sounds like there is still water (or dampness) in the wiring. i think its going to have to go to lexus in guildford. cheers anyway!!!

THANK YOU to everyone who offered advice on my problem, i would just like to add that LEXUS GUILDFORD have done a truely fantastic job and sorted it perfectly!!! the new alarm box, labour, all electrics and VAT didn't even come to £150. to say i'm over the moon is an understatement!!!! the car was also given a complimentary valet before i picked it up!! extremely nice staff too!!