My plan to get a cheap(er) new key

[m4rkw]

So I recently got a new shell and cut key blade from the awesome eBay seller who cuts to code/picture but I’d like to have a spare remote key.

My car is a 2006 harrier, I found this:

http://japan.toylexparts.com/harrier/521120/acu30w-awpgk/350w/001/3/6712/674241c

http://japan.toylexparts.com/harrier/521120/acu30w-awpgk/350w/001/3/6712/674241c/89071B

so it seems the transmitter module in the key has its own part# - 8907148140.  So my plan is to just buy one of those from the dealer, get another shell and cut key from the eBay wizard and program it myself. It looks like the immobiliser chip can be programmed easy enough with techstream and the remote module is just a ritual with opening doors etc.

Is there any reason this won’t work?  Online pricing for the module suggests around £125 whereas a full key I was quoted over £200 for.

[sorcerer]

Looking at it logically, I don't see any reason why your plan shouldn't work - but I'm no expert so can't be held responsible for encouraging you to spend money if it doesn't  

If it was me, I'd be happy taking a punt on it.

[m4rkw]

I found an eBay seller who can get aftermarket modules so gonna try that first.  £40 for a full new working remote key will be awesome if it works.

[m4rkw]

Didn't quite work out initially but I went to see the guy today and got a generic VW-style key programmed to the car.  Looks a bit different to a Lexus key but it works fine so will do as a backup and much cheaper than the dealer.