Entering the code on your Rover R660 radio
The stock radio units fitted to the Metro & Rover 100 series are programmed with a four-digit security code as an anti-theft measure. If the battery is removed or goes flat you may need to re-enter the code next time the radio is turned on. This procedure is written for the R660 unit but also applies to other Rover radios such as R570, R670 and R681.