The solution was to disconnect the car battery then remove the battery in the key fob and press and hold the lock button to discharge any power left in the circuit. Once the car battery was re-connected and key battery replaced they re-synced with each other and all was well. MY16 RR Evoque HSE Dynamic 2.0L Diesel Firenze Red. How the replace the battery on a Rover remote entry key fob. Battery is a CR2032 3V and Alkaline A23 12V. Keyless Entry. Rover 75, Rover City 2. 400 series. This video shows how to change the smart key battery on the Range Rover Sport 2010 keyfob and clear the "smart key battery low" error message.

Dec 15, 2018. #1. So tonight I got a low battery warning for the key fob, I changed the battery and still have the warning. I have tested the new battery and get 3.26v, I also get 3.11v on the old battery, anyone had similar or know what the cause may be please?

Pascaltissot. When replacing the battery on 4.0/4.6 and later model Range Rovers, you should leave one of the doors open (preferably the drivers door) to prevent being locked out. This should prevent the locking system from automatically locking the vehicle and arming the alarm when the battery is being disconnected. Haven't had one since 2005 however. So the 2007 came with 2 keys. One works fine. The other looks like brand new and appears to have a dead battery, as if it was in a drawer since new. The manual says that they are rechargeable, and charge while in the ignition. This key will turn in the ingnition, but the statrer won't engage. kme8zj.
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    • change range rover key battery