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Jemmo

Key Programming - Where Am I Going Wrong?

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Folowing my recent episode with central locking/alternatot/battery my key will lock the car and set the immobiliser from the key fob, but it wont unlock/unset. I have a spare key and have been tryoing to reprogram the dodgy key following this process;

Open driver's door and insert programmed black key into ignition. Close door.

1). Within 15 seconds - Switch ignition on and off 4 times.
Switch ignition on.
Open and close the driver's door.

2). Within 20 seconds
Open and close driver's door 5 times.
Remove key from ignition.

3). Within 10 seconds
Insert black key to be programmed into ignition.
Switch on and leave for 1 minute.

Remove key.

Repeat step 3 for further keys.

I have tried several times to do this but the key will still not unlock the car.

My question is, from the same post there are instructions to program the key to the remote for the alarm/central locking;

"1. Start: Driver's door open and unlocked. Key not inserted in the ignition.
2. Insert programmed black key in ignition and then remove it, without turning it.
3. Do the following with the driver's door: shut, open, shut, open, all within 40 secs.
4. Insert key in ignition and then remove it, without turning it.
5. Repeat step 3.
6. Close driver's door.
7. Insert key in ignition
8. Turn key from Lock to On and back to Lock with a 1 second interval.
The number of times you do this will select the desired programming
mode: Once for ADD key, twice for REWRITE all keys, 3 times for
CONFIRMATION, 5 times for PROHIBITION.
9. Remove key from ignition.
10. As verification of mode selection (except in Confirmation mode), the electric door locks will lock and unlock a number of times corresponding to the mode chosen in step 8.

(If Confirmation mode is selected, the doors will lock/unlock a number of times corresponding to the number of remote controls programmed into the system.)

11. For ADD and REWRITE modes: within 25 seconds after the locks have confirmed the selected mode:
(11a) Hold down the LOCK button on the new remote control whilst at the same time pressing UNLOCK 5 times. (11b) Release and press LOCK once.
(11c) if the procedure has been performed correctly, the door locks will go from lock to unlock. If not, start from 1 again.
(11d) To enter additional remotes, repeat from step (11a).
12. Open driver's door to complete the procedure."

At step 2, is this referring to the key I have tried to program (but is playing up) or a known good key?

At step 7, I am assuming that I need to insert the key I am trying to program?

Can someone confirm please as I don't want to put the wrong key at the wrong stage and wipe any programming and have nothing to start with.

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Yup, sounds right - 2 is a known good, 7 is the target new key.

Assuming it's similar to the Yaris programming procedure.

re. the remote modules not working, where did you get them and have you confirmed they are correct for your car?

For instance, when I was after one for my Yaris I found there are at least 3 types of transponder module: Denso, Valeo and Toki Rika and they are not cross compatible.

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The immobiliser/remote locking system is all standard as fitted at factory.

Thanks for the reply - will try again tomorrow

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You can't reprogram the key - Their codes are hardcoded.

What you are actually programming is the ECU.

If the key is already registered with the ECU, this procedure won't work.

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Sorted. Cheers Cyker

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Sorted. Cheers Cyker

Hi Jem.

How did you resolve your issue. You wanted to know what key to use at a given stage.

It would be nice to know for future reference. This key programming procedure is confusing.

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Agree it can be confusing. I did this;

Open driver's door and insert programmed black key into ignition. Close door.


1). Within 15 seconds - Switch ignition on and off 4 times.

Switch ignition on.

Open and close the driver's door.


2). Within 20 seconds

Open and close driver's door 5 times.

Remove key from ignition.


3). Within 10 seconds

Insert black key to be programmed into ignition.

Switch on and leave for 1 minute.


Remove key.


Repeat step 3 for further keys.

Followed by this;


"1. Start: Driver's door open and unlocked. Key not inserted in the ignition.

2. Insert programmed black key in ignition and then remove it, without turning it.

3. Do the following with the driver's door: shut, open, shut, open, all within 40 secs.

4. Insert key in ignition and then remove it, without turning it.

5. Repeat step 3.

6. Close driver's door.

7. Insert key to be programmed in ignition

8. Turn key from Lock to On and back to Lock with a 1 second interval.

The number of times you do this will select the desired programming

mode: Once for ADD key, twice for REWRITE all keys, 3 times for

CONFIRMATION, 5 times for PROHIBITION.

9. Remove key from ignition.

10. As verification of mode selection (except in Confirmation mode), the electric door locks will lock and unlock a number of times corresponding to the mode chosen in step 8.
(If Confirmation mode is selected, the doors will lock/unlock a number of times corresponding to the number of remote controls programmed into the system.)

11. For ADD and REWRITE modes: within 25 seconds after the locks have confirmed the selected mode:

(11a) Hold down the LOCK button on the new remote control whilst at the same time pressing UNLOCK 5 times. (11b) Release and press LOCK once.

(11c) if the procedure has been performed correctly, the door locks will go from lock to unlock. If not, start from 1 again.

(11d) To enter additional remotes, repeat from step (11a).

12. Open driver's door to complete the procedure."

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