Key and immobiliser issues

[AndyRX300]

Hi everyone, looking for some help.

I bought a lexus rx300 2004 it had 2 black keys. One of them was taped together and the blade worked but not the buttons and on the second key the buttons worked but not the blade. I replaced the Battery in the one where the buttoms didn't work and now they do so both keys can lock and unlock etc... but my Battery went dead and after charging it the car now turns over but wont start. 

I am assuming its the immobiliser but wondered if there was a way i could fix this myself without having to go to a dealer (as i cant start it to get there). 

Please please help, I'll answer any questions needed to figure it out.

Regards, Andy

 

[rayaans]

Could be a lot of things:

Might be useful - http://econofix.com/nostart.html

[ChrisKaye]

Hi Andy, if it were the immobiliser then it wouldn't turn over.

You can get surges in the electrics when changing a Battery so please check all fuses and relays before fearing the worst. Also if new Battery had been 'on the shelf' for a while it would be worth checking the electrolyte is topped up (if the Battery model is not maintenance free type) and giving it a few hours of charging.

Start simple before fearing the worst buddy!

Sent from my Iphone using Tapatalk

[AndyRX300]

Battery has been charged and ia a decent batrery holds its charge fine. It turns over fine but still won't ignite, which seems to be immobiliser problem, as it would still turn over because the immobiliser doesn't control that. Anybody know a way of fixing without needing a mechanic? 

 

[PCM]

Maybe give your local Lexus garage a ring?

You might get some free guidance?

[DanD]

On ‎07‎/‎04‎/‎2016 at 9:30 AM, PCM said:

Maybe give your local Lexus garage a ring?

You might get some free guidance?

I would suggest that too... Lexus guys are usually quite happy to give advice over the phone at no cost... I have certainly used this in the past...