Sprinter 2500 L5-2.7L DSL Turbo (2003)
Control Assembly: Description and Operation
This ATC system uses a combination of electrical and mechanical controls. These controls provide the vehicle operator with a number of setting options
to help control the climate and comfort within the vehicle.
A/C Heater Control Panel
The A/C-heater control panel is located on the instrument panel inboard of the steering column and below the radio. The A/C-heater control panel
contains a rotary-type temperature control knob, a rotary-type mode control knob, a thumbwheel-type blower motor speed control and an air
conditioning compressor push button switch and indicator lamp. The A/C-heater control panel also features a push button switch and indicator lamp for
the residual engine heat utilization (REST) function, cabin heater or the heater booster (as equipped).
The A/C-heater control panel cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.
To control the interior temperature, the A/C-heater control module uses the actual values from the temperature sensors and the CAN bus and compares
them with the nominal value of the temperature control switch.
The A/C-heater control panel is serviced only as complete unit and cannot be repaired. If faulty or damaged, the entire control panel unit must be
replaced.