I just brought a second hand Toyota Rav 4 and needed to get more keys for the car. I only had 1 key and it was a Valet key which couldn’t be used to programmed in more keys. Door 2 Door Locksmith & Security explained this in detail and told me that they would have to reset the ECU back to factory setting to be able to program in new Master keys. They were excellent to deal with and their knowledge of the car key systems was great. I got them to do the job and it was all done in a few hours. I now have 2 master keys and my existing valet key for my car. Very happy with the service I received and I will have no problems going back in the future for any more car keys. Excellent service, Thank you.