TonyN

iTrader: (1)

hell yes! i need this info, getting my new key soon and this is will save me much money by avoiding the dealer.

TonyN

iTrader: (1)

BTW for step 2. Do you insert and leave the master key in until it is time to insert the new key, or do you take it out right away?

hkvan

Leave master key in ignition until step 4 procedure is complete.

TonyN

iTrader: (1)

nice, first try and got it to work! sweet.

jolsamuel

It worked the first try, Thanks hkvan, you saved me a lot of money.

ninja6o4

iTrader: (6)

Will this work on a) a 2002 GS430 and b) reprogramming a key from my old 98 GS400 for the new 02 GS430?

MR2-Mike

Will this work if I wanted to use a different ECU?
Can I just program an extra master key to the new ECU?

ivesGS400

I lost the only key I had programmed to car. I have another key (I got it when I was in accident and key in the ignition was shattered) but never got it programmed. Do I have any option other than taking it to dealer? That would mean I would have to have it towed 2+ hours away to nearest dealership.

Jonb42

Lexus Key and Remote Programming


Key Programming 1. Insert an already programmed master key into the ignition. Do not turn.
2. Press and release the gas pedal 5 times.
3. Press and release the brake pedal 6 times.
4. Remove the key from the ignition.
5. Insert the new key you want to program into the ignition.
6. Press and release the gas pedal one time.
7. Wait 1 minute. The security light will be blinking for this one minute. When it stops blinking your

key is programmed. To end programming step on brake one time.
NOTE: Look for your security light. This light will guide you during the programming procedure. The security light will go off at Step 1. It will remain off until Step 6. The security light will come on and start to blink after Step 6 until the key is programmed. If the security light comes on after Step 4 STOP the procedure and start over again.

If you perform this procedure too slowly your car will not go into programming mode. If you can not get your car to go into programming mode make sure you are using a master key and not a valet key.

If you have a master key then you will probably need to perform this procedure more quickly.

angus

iTrader: (4)

OK, there seems to be some issue programming the keys to my car as I have successfully programmed the keys before and now they have come un-programmed..

I had 2 spares that I programmed after much trouble I think I found out that too many keys were in the memory so I deleted all the keys but one.

Then I programmed them and the car would start.

Left the car for winter and when I came back only the original would work.

now I am back to not being able to program the keys.

Any insight?

cali99300

Thank Jon. The first time I tried programming my two precut retractable blade shells I purchased on Ebay for $60, it didn't work. I was pumping too slowly. The third and fourth time were the charm. There was one difference between the two procedures. On the second key, when I finished and pumped the brake once, the light did not start blinking again until I removed the new key and then hit the brake one more time. So, for $120 I bought two good used remotes and the two precut retractable blade shells from Ebay (two different sellers). The icing is I did not have to pay Longo Lexus $75 per key to have them programmed. A total savings of about $400 over new keys and the stealer labor.

cali99300

Check out Jonb42's post below for 99 gs300. Eliminate your step 1. Then, hit the brake pedal after the last step to end the programming ( the light will start blinking again).

In all fairness, I may have been pumping too slowly when I tried your steps and failed 3 times.