THERMOSTAT HOUSING FOR DISCOVERY 3 & 4 RANGE ROVER SPORT 2.7 3.0 DIESEL LR073372. FOR VW AUDI AIR CONDITION HEATER BOX AIR CON SERVO MOTOR 4M0820511A UK. The monitor is automatically powered on when reversing gear is engaged, and if there is no video signal, you can turn off the monitor by pressing the power button.
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