Auxiliary Heater - Tips For Coping With; Problems - Dodge 2004 Freightliner Owner's Manual

F r e i g h t l i n e r - a l l . b o o k P a g e 1 3 0 M o n d a y , D e c e m b e r 1 , 2 0 0 3 2 : 5 4 P M
1 3 0 U N D E R S T A N D I N G Y O U R I N S T R U M E N T P A N E L
To switch on at blower speed 1:
Press the upper section, the left-hand indicator lamp in
the switch lights up.
To switch on at blower speed 2:
Press the lower section, the right-hand indicator lamp
in the switch lights up.
To switch off :
Press the switch to the middle position.
Operation is only possible when the key is turned to
position 2 in the ignition lock.
NOTE: The auxiliary heat exchanger in the load
compartment should be switched off at coolant
temperatures below 176 °F (+80 °C) to quickly de-fog
and de-ice the windshield and front side windows.
A U X I L I A R Y H E A T E R – T I P S F O R C O P I N G W I T H
P R O B L E M S
The heater either does not switch on or automatically
switches off:
• Insufficient fuel, fill up the fuel tank. Start up heater
several times, until the fuel lines are filled.
• The auxiliary heater will automatically switch off if
the fuel level is under about 4 US gal (15 l).
• The fuses in the fuse box are damaged. Electric
fuses.
• The battery voltage is too low, an undervoltage
protector switches off the heater if the battery
voltage falls below about 10 volts.
The heater motor does not run
• The battery voltage is too low, check the battery.
Batteries.
• The fuses in the fuse box are damaged.
Electric fuses.
• The heater motor is damaged.