2010 Is250 - Issue With Fob

[Therealcodyg]

So, my fob is acting crazy. Sometimes it operates fine (i.e. locking and unlocking properly), other times it will not work at all until the lights turn off automatically, which is something like 60 seconds (although the red light on the fob still blinks when buttons are pressed). Once the lights turn off automatically, the fob works perfectly again. I have checked my car battery and replaced my FOB battery, no luck. The only indicator on the dash that is illuminated is the tire pressure sensor, which came on immediately after having a flat fixed.

Does anyone have experience with this? Any advice on how to fix?

Thanks!

[1990LS400]

Your car came with two "fobs". Have you tried the other one?

[Therealcodyg]

Your car came with two "fobs". Have you tried the other one?

Unfortunately I bought used and only received 1 fob.

[1990LS400]

Unfortunately I bought used and only received 1 fob.

You are a brave soul.

My suggestion is to purchase an extra fob, have it programmed and see if it works better. If it does solve the problem, I would suggest that you buy still another fob so that you have two fully functioning ones.

I would be / have been totally paranoid if I had only one key for a vehicle. I misplaced the key to my last LS a few years ago and then found that my wife had lost hers months earlier but never told me. I was lucky and quickly found my key but I was at the Lexus dealer the next business day to buy two keys - gave one to my wife and put the other in a fireproof safe.

[Therealcodyg]

Agreed, not an ideal situation. I'll give a new key a shot and report back. Thanks!