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HowTwo: Pair a transponder key with a mk2 MR2
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TOPIC: HowTwo: Pair a transponder key with a mk2 MR2
#59128
HowTwo: Pair a transponder key with a mk2 MR2 6 Years ago Karma: 106
I've spent a few months (obviously not at the one time) researching the various bits of this - from the key blade, to the chip type, etc..I already had a spare purchased [overpriced IMO] from a local locksmith but wasn't happy with its clumsy look and found that the mk3 owners has successfully programmed keys themselves.

Before I go into all the boring bits, and all I've researched and found I'll post the quick fix to this...it works 100% with 99/00 mk2 sw20 MR2 Revision 5 but should work with the Rev4 (and possibly Rev 3's)

A perquisite is that you have the black master key for this, if you've only got the grey key it's a no go.

Here is the key pair programming instructions:


Turning the ignition to on does NOT TURNING OVER ENGINE unless stated below.

NOTE: Contrary to what Toyota states, the security LED on the dash didn't come on and there was no notification that the pairing was successful, just the new key now starts the car

Starting Conditions:
-Vehicle Unlocked
-All doors closed
-No key in igntion lock

Insert a programmed black master key (Current Key) into the ignition lock

Carry out the following within 15 seconds:
Turn the igntion on/off four times
Turn the igntion back to on (fifth time)

Carry out the following within 20 seconds:
Open & close the drivers door six times

Carry out the following within 10 seconds:
Remove the key (working one) from the Igntion lock

Carry out the following within 10 seconds:
Insert the key to be programmed into the ignition lock (NEW KEY)
Turn the Ignition lock on and leave for at least 80 seconds.

Remove the key from ignition lock.

Open and close drivers door to complete the process (IMPORTANT)



I Got the 4C Key (TOY41 Blade) for $10.50 Delivered from the below seller (www.ecutool.com) on aliepxress

www.aliexpress.com/snapshot/212243579.html


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The Locksmith -vs- Toyota -vs- The Clone


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There is 2 keys available from Toyota Directly:


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89785-17020 - TRANSPONDER KEY MASTER

89786-17020 - TRANSPONDER KEY SUB (Valet ???????)

Both are the same price but the sub im guessing doesnt open boot or has access to program further keys!

The Boring Stuff (about the immobiliser):


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System Diagram


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System Location (rough guide! [for mr2] )


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Toyotas Take on this:


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...a reason why the door switch is crucial to this process


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...and thats it ;)
eringobragh
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Last Edit: 2013/06/24 19:49 By eringobragh.
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#59129
Re: HowTwo: Pair a transponder key with a mk2 MR2 6 Years ago Karma: 106
I've added a few more points:

I have a 51 page PDF from the Toyota workshop dedicated to the irengine immobiliser (troubleshooting, etc) I found on the net after much much searching.

I've uploaded this here:

www.mediafire.com/?3vr7ncz0a9ru2vu
eringobragh
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#59152
Re: HowTwo: Pair a transponder key with a mk2 MR2 6 Years ago Karma: 106
....took this to the locksmithtoday (I paired it using an unchipped blank I had) - locksmith told me that the blades don't match and it was a few mm smaller, but told him to cut from the tip and not the shoulder - anyway it works 100% opens all locks, etc so the aliexpress is A1 - coincidentally he asked me was it a chinese key, I told him no, he said he cut one before and it wrecked the blades on the machine - anyway I can confirm the key doesn't break locksmiths machines either :th:

I meant to add this link as well:

Theres a Silca Clone available for £18.50 cut (13.50 uncut) that will also pair with the igntion, although this one doesn't have the Toyota Logo:

www.carkeyhelp.co.uk/products/Toyota-MR2...er-key-TOY41RAT.html
eringobragh
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#62478
Re: HowTwo: Pair a transponder key with a mk2 MR2 5 Years, 8 Months ago Karma: 154
You don't happen to know if you can get a two button remote key as a replacement and programme the buttons to open and close the doors like the oem key?
Infamous
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#62479
Re: HowTwo: Pair a transponder key with a mk2 MR2 5 Years, 8 Months ago Karma: 106
Infamous wrote:
You don't happen to know if you can get a two button remote key as a replacement and programme the buttons to open and close the doors like the oem key?

not off hand - does your car have the TVSS system? might be difficult to find something that has the 4C crypto chip and the alarm circuitry - sure would be handy though.

I have thought about it though - I have 4 fobs, 4 keys (3 chipped) for my car now I need to program the other 2 fobs when I get a chance
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