The remote is nothing more than a device to change the contents display face. The code for the unit is embedded into the unit behind it, so the old code will work. It will not even notice you changed the remote control. If you bought a remote control for a different Kenwood audio, then it is a lottery. You can program a bespoke remote, they are set to one device, or a range of devices sharing the same code.
Kenwood Audio Remote Control New OEM Replacement ...
www.kenwood.newremotecontrol.com > KenwoodAudio
NEW Kenwood Audio & CD Remote Controls. ... VR-208,
RC-R0607, A70-1194-05. VR-2080, RC-R0907, A70-1191-05. VR-209, RC-R0607, A70-1194-05. VR- ...