Error Messages For Symbol Displays - Kärcher MC 250 Originalbetriebsanleitung

12.2 Error messages for symbol displays

Malfunction Cause
The engine indicator light (MIL) lights
up when the ignition is switched on to
check the function.
It notifies the driver of a fault in an
emission- or safety-related compo-
nent.
In the event of active faults, the MIL
lights up permanently.
Engine fault in the exhaust treatment
system
Informs that the exhaust aftertreat-
ment is impaired.
Regeneration process required.
Regeneration process has generated
an error (NOx monitoring unit).
Engine oil pressure is too high.
Fault in the drive.
Parking brake active.
Low fuel level.
Coolant temperature is too high.
Hydraulic oil temperature too high.
Hydraulic oil level is too low.
Hydraulic oil temperature too low.
Hydraulic oil filter malfunction
Service required.
Remedy
 If the fault is no longer active, the light is switched
off after 3 driving cycles
 In the event of DEF faults, the light goes out al-
ready 1 driving cycle after filling up the reaction
liquid (DEF)
 1 driving cycle =
a Switch on the ignition
b Start the engine and let it run for at least 5 sec-
onds
c Switch off the engine and wait for the afterrun
(approx. 30 seconds)
 Eliminate the error in order to get the vehicle fully
functional again; this prevents damage to the en-
gine and vehicle
 Check the level in the DEF reservoir
 Minimum engine run time after topping up is 20
minutes. Then the warning lamp goes out.
 Perform regeneration (see chapter "Regenera-
tion").
 Call Customer Service.
 Call Customer Service.
 Call Customer Service.
 Release the parking brake.
 Top up the fuel.
 Vent the fuel system if the tank was run dry.
 Switch off the motor.
 Clean the radiator (see chapter "Cleaning the ra-
diator").
 Check the level of coolant in the motor, refill as
necessary.
 If the warning light does not go out within 5 min-
utes:
a Switch off the engine
b Contact Customer Service
 Operate the engine in idling mixture until the
warning light goes out.
 Top up the hydraulic oil.
 Carefully warm up the engine until the warning
light goes out.
 Filter dirty or oil too highly viscous (viscous)
 Heat the hydraulic oil to at least 40°C by operating
the vehicle. If the fault is still active: Contact Ser-
vice.
 Have the device serviced by Customer Service.
a The service display must be reset by Customer
Service.
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