snest

Been reading threads all weekend & still cannot come up with an alternative to getting the ECM reflashed & hoping someone might have a better suggestion...

Wife lost her remote keys over the weekend. The only other key we have is the valet key. I was hoping the valet key could be cloned, but it doesn't look like that's an option.

thanks for looking!

caddyowner

Are both master keys lost?

Also, check with the dealer with your model year \ vin as I remember something about a change that did not require a reflash.

snest

unfortunately all we have is valet key.

jimbosr1

ive read in the owners manual that if all master keys were lost,the ecu will have to be replaced.new ecu comes with 2 master keys.good luck

Jabberwock

I'd be doing everything I could to find the lost key - maybe issue small reward, post lost signs, etc. New ECU and Keys is gonna be a high $$$ item. Good luck.

Ty419

That sucks. To the best of my knowledge, the ECU has to be replaced if both keys are lost. Found that out when a tint shop lost a key to my 400 and it was my only key. When I told them they were buying an ECU, they managed to find it.

piggieback

What year is your LS, if its below 04 read my thread

https://www.clublexus.com/forums/ls4...-everyone.html

CG lover

I'm down to one key fob,, the wife placed all the others in a safe place, in fact so safe we cannot locate them now,, have tore the house apart looking with no luck,, beginning to think they made it out with the trash somehow,,

sure hope my one and only last a long time,,

Derry

caddyowner

I received one master and one valet when I bought my LS from a BMW dealer. I paid to have my Lexus dealer source a new master fob and program all three fobs (they said they needed all three fobs to program a new master fob). I put one master fob and the valet fob in my regular storage place for spare keys.

jimbosr1

i also got one master and one valet.i went to a lock smith and ordered a master,they only used the master i had to program the new master.

jimbosr1

do not buy a used master key .i bought one from ebay and they cannot be programed.better off going out to dinner then wasting you money.