Master Key Replacement (1 Viewer)

[sailor95]

How would i go about doing this without getting wined and dined by the lexus dealer? I do not have my old master key but i do have my valet key that i currently use, but its top part is broken and cannot go on a key chain so keeping up with it can be tough. Any suggestions greatly appreciated!

 

[NC LX]

Same situation. Called a local locksmith this morning to get a quote. Waiting to hear back.

Following.

 

[outdoorsman]

Here is some information

No master key. Only have a valet. How do I get a master? Ecu Flash?

 

[bamabrock]

100-series FAQ

2nd post in FAQ

 

[oftpiste]

Mobile locksmith did mine with a new key brain and some master and valet spares. Think it was around $$250 and an hour.

 

[sailor95]

So how do these technical service bulletins work when going to the dealership, are they totally year specific or more model specific, like 98-02 compared to 03-05 and 06-07. Found a bulletin for an 01 lx470 for a key immobilizer issue ECU FLASH REPROGRAMMING PROCESS
Service Bulletin Num : SS00101 - MAR 09, 2001 NHTSA Item Number: 619115
Component: ELECTRICAL SYSTEM:IGNITION:MODULE. but this is for an 01 and mine is a 2000, I also found this for a 2000 though ENGINE IMMOBILIZER SYSTEM PRECAUTIONS
Service Bulletin Num : EL00899 - DEC 10, 1999 NHTSA Item Number: 610101
Component: ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT CONTROLLER.

It seems if we can get a reflash a new key through the dealership thatd be best situation on thier own dime.

 

[sailor95]

Nobody know?

 

[suprarx7nut]

Normally the bulletins are very precise in the year range applicable. There may be similar issues with other years, but generally the bulletin calls out years with a very specific part changeover that drives the cutoffs. If yours is a 2000 I doubt any dealer would provide the 2001 service on their dime.

Also note, as far as I know, the bulletins in no way reflect whether or not a dealer is obligated to pay for service out of warranty. It's an acknowledgement that an improvement can be made with a new part/service. Safety items may be mandated to be covered, but some bulletins are simply about avoiding certain cleaners, a rattle in the exhaust, a squeak in the brakes, etc...

Check out this thread: LX 470 Technical Service Bulletins (TSBs)

It appears the 2000 has the immobilizer bulletin listed.

My understanding is that if you can find someone with techstream and the know-how to reprogram, you can add a new remote to the ECU. People that can and are willing to do that seem very few and far between. The dealer will recommend a new ECU and remote set to the tune of $700-1000.

Given my involvement with keys for these cars I've debated trying to figure out and clearly document the process, but I hesitate because there are probably some potential legal issues with that. Being able to program a key would give you easy access to defeating the security system and stealing a car. :/

 

[bigredmachine]

if you don't have any master key you need to go to the dealer to get a resead on the immobilizer, you cant program new keys off a valet you need a master to do a program