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Old 11-01-2019, 10:33 PM
Join Date: Sep 2016
Location: PNW
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Locks only recognize one fob at a time

Locks on our 05’ only recognizes one key fob at a time. It will still start with the unrecognized fob. But won’t unlock or lock. I can reprogram it and of course it will then lock an unlock remotely but the other one goes null and void.. Anyone been down this road?
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Old 11-01-2019, 11:07 PM
andrewwynn's Avatar
Join Date: Jun 2015
Location: Racine, WI
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You have to re-sync all at once. It sounds like you are doing the reset procdeure from the beginning with each key. That will remove the other key.

You need to do the initial procedure of putting the key in and turn to "on" then remove. You hold one button and triple press the other. It will cycle the locks on the doors to indicate success.

You must then in quick succession do the button press sequence on any additional keys without putting any keys into the ignition.

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Old 11-01-2019, 11:19 PM
Join Date: Sep 2016
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That’s exactly what I’ve been doing. Thank you for the information.
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Old 11-02-2019, 01:41 PM
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Ditto Andrewwynn...the FZV/DWA (central locking/anti-theft alarm siren) systems instruction say that ALL the remote keys (up to 4) need to be initialized during the same session. Also, don't fall into the camp that misunderstands that the EWS function of the remote keys (the starter/immobilizing system) is the same as the FZV/DWA features of the remote keys. They are totally different and even operate on different radio frequencies.

EWS uses a 125 KHz AM frequency...and communicates between the DME/ECU, EWS control module, Ring Antenna, and remote key. EWS doesn't even use the battery inside the remote...it is self powered through induction by the ring antenna around the ignition cylinder.

FZV/DWA uses 315 MHz (in the No America market) and 433 MHz in Europe...and the communication path is the RF signal transmitted by the remote when a button is pressed to the aerial in the rear left cargo window, to the receiver amps in the rear, then eventually up to the GM where the command is sent to central locking and to the anti-theft components to lock/unlock and arm/disarm.

{take note of the 2nd paragraph}

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Last edited by Qsilver7; 11-02-2019 at 01:49 PM.
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