hello i have a 1999 rx 300 awd my girl freind back into something and broke the charcoal box and broke the wires i put them together again it started but was ruff running would not move in drive only in r got it home by flat bed replaced charcoal canister tried starting it did but still ruff. let it sit for a day now it turns over and no spark had a freind bring his computer up it says code miss matched key

 

Do you have other keys for your RX? Try to use them one at a time. The flat metal key does not have the magnetic slug.

Also do you have any magnetic source (other smart key) near the ignition key slot that could be interfering with the magnetic field of the RX key. Try removing all other keys from the key ring.

Salim

 

i tried two keys no other keys around