pmw148

2000 rx300 and our last key is ready to break. We have one master key in bad shape so I want to get another master. I don't have the key code but do have two cut key blades with no transponder or case. I see used keys on ebay and am wondering what I would have to do if I bought one of them. Can I program it to match my car? Can I insert one of my blades? The car is on it's last legs and I don't want to spend much on a new key but the one we have won't last
thanks

DewHawk

My case broke on one key and I just bought shell online and moved the electronics form the old key to the new. Then took it to a dealer who cut the new key. Cost about $5 for the key and $30 to cut new key.

hypervish

Welcome to Club Lexus!

You can buy pre-cut key shells on ebay, shipped for about $20.

By pre-cut I mean you give them your key code or a picture of your current key and they will cut it to match.

pmw148

Thanks for the suggestions. I think that is how I got the key 'blades' several years ago. I'm looking for another master with the whole lock/unlock feature. Can I buy an old key from someone on ebay and reprogram it somehow? Maybe substituting my key blades. Thank you!

hypervish

Sorry, completely missed that. Still recovering from memorial day weekend. haha!

You can buy a key fob on ebay for around $50-60 which can be programmed to your RX300. Make sure the FCC ID is the same. Seeing as you have already have two pre-cut shells, you can just take the guts from the ebay key and put them into your pre-cut shell.

There are instructions for programming the key on this forum. A quick search will reveal them!

matts6887

speaking of keys; I guess i got pretty lucky when we bought my 99 300 back in january; as luckily it had both sets of keys with it including both valet keys. I just hope neither of my cases crack or break anytime soon. My keys have hit the ground a few times but thankfully the case didnt crack. I guess it happened when i had my hands full carrying things and lost my grip on them.

Piece350

If I go to the dealership, which is literally around the corner from work, how much will they charge? My key broke from the FOB

g5873241

By all means get that second master programmed and stored in a safe place.

sktn77a

iTrader: (2)

Get a key blank/shell on e-bay ($5 - $10). Open up your old master and remove the remote core. Place the old core in your new shell and get the key cut at the local Lexus dealership for $25. Once you start programming/reprogramming, things tend to get real expensive, real quick!

g5873241

Programming isn't expensive. Reprogramming can be.

A dealer will provide you your key number if you call them, and with the key number you can go on ebay and have cut keys made.

g5873241

Not to overdo the topic, but when I went through this a couple of years back, the two alternatives I had reached were
-having someone flash the ECU
-finding an exact match ECU that would come with at least one good known master key

I was lucky that Sewell Lexas (don't remember if Ft. Worth of Dallas) would still do the flash for free, all I had to do was pay shipping and insurance both ways plus provide copies of relevant paperwork to prove ownership.

Once I got the ECU back I followed the instructions for programming from this site, and no issues.