Car doesn't respond to keys anymore?
#1
Car doesn't respond to keys anymore?
I've got a problem with my 1998 gs300, neither of my master keys currently work with my car, both keys have brand new battery's, and were working previously on the car. But a couple months ago I installed a whole new sound system into my car including a new headunit. (Kenwood ddx372bt) ive tried reporgamming the keys using the whole lock unlock 5 times put key into ignition and all, but the car doesnt regonize the keys, it goes into programming mode but doesnt react when i hold down the buttons on the keys. Car still starts up fine, trunk opens fine. But on occasion the engine misfires in one of the chambers, causing me to turn the car off and turn it back on again. Or sometimes the car doesn't even recognize the keys and doesn't fire up, just keeps trying to start up. Looking inside the car the key to ignition light doesn't flash when the doors are all locked. But if I open the passage side front door the alarm goes off, until I put the key into the ignition and put it into the on position. Took it to a toyota dealership yesterday cause I have a connection there he tried to program the keys and it didnt work. He told me that it could be either a fuse that has burned out or has a bad connection. Called lexus a few weeks back and they said I would need new keys and a New ecu, sounds extremely expensive. Any help is greatly appreicated!
Thanks
Thanks
#2
Lexus Test Driver
iTrader: (8)
If its happening with multiple keys, its quite obvious its not a key problem, but (as Lexus said) an ecu problem. So they're correct. If it were a blown fuse, it wouldn't work at all, not work intermittently so thats a big . loose connection in the cylinder is a possibility, doesnt hurt to open up the dash and see if anything is loose back there.
I highly doubt the stereo install had anything to do with it, I think it just coincidence. Cant blame the last thing done to a car for a problem... cars get old and break
You could save a pretty penny if you can find a wrecked GS at a wreck yard and get the ECU and keys from.
I highly doubt the stereo install had anything to do with it, I think it just coincidence. Cant blame the last thing done to a car for a problem... cars get old and break
You could save a pretty penny if you can find a wrecked GS at a wreck yard and get the ECU and keys from.
Last edited by Mr Jokster; 08-20-15 at 06:29 PM.
#5
Lexus Champion
When the problem happens, does the security light go out or does it stay flashing?
You might want to try to program another immobilizer key.
If opening the passenger door with the driver's door closed always makes the alarm go off, you have passive mode enabled in the alarm settings, which activates the alarm 30 seconds after you closed the driver's door. Annoying I know...
Skip to 3:10 to get to the menu in techstream:
You might want to try to program another immobilizer key.
If opening the passenger door with the driver's door closed always makes the alarm go off, you have passive mode enabled in the alarm settings, which activates the alarm 30 seconds after you closed the driver's door. Annoying I know...
Skip to 3:10 to get to the menu in techstream:
#6
*Mr. Jokster: By wouldn't work at all you mean the car wouldn't start? Or that the car wouldn't even react to the keys period, because that's exactly what's happening now. Haven't gotten a chance to open the dash up cause classes are starting haven't gotten a chance to.
Thanks Mcon, if I happen to need to get a new Ecu I'll give them a call.
Thanks Catagory 5, will let you know if I need a new Ecu and key.
Speedkar9
Ill have to check tomorrow morning about the flashing light. Will update sometime tomorrow. I tried programing both of my keys neither were even recognized as keys from the car, it would just remain in programming mode.
Thanks Mcon, if I happen to need to get a new Ecu I'll give them a call.
Thanks Catagory 5, will let you know if I need a new Ecu and key.
Speedkar9
Ill have to check tomorrow morning about the flashing light. Will update sometime tomorrow. I tried programing both of my keys neither were even recognized as keys from the car, it would just remain in programming mode.
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