Range Rover transmission fault, stop engine

Range Rover uses a auxiliary battery to back up the electronic systems, as this battery ages it doesn't hold a full charge. When this happens you get a warning on the dash that says "Transmission fault, put into park and turn off engine" this could cost up to $600. at the dealer to have it repaired. This is how to fix it for as little as $15 depending on where you get the replacement battery. About $130 for an OEM battery at the dealership. If you let the car run for several minutes it will charge the battery up and the fault will go away until the car sits long enough to discharge and create the fault again.