Fault code DIN brief description Cause Consequences Remedy
Setpoint potentiometer for front power lift Signal fault
09.1.40
S021 external front power lift raising button
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
Circuit diagram
09.1.41
S022 external lower front power lift button
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
Circuit diagram
09.1.44
A100 MFA, multifunction armrest
Stop button, front power lift
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
09.1.45
A100 MFA, multifunction armrest
Front power lift transport quick lift button
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
09.1.46
A100 MFA, multifunction armrest
Front power lift control, quick lift button
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
09.1.47
A100 MFA, multifunction armrest
Front power lift Quick entry, quick lift
button
Faulty button,
Signal fault
Button inoperable until next
trouble-free cold start
09.1.48
A100 MFA, multifunction armrest
Button, front power lift
Button, communication fault Button inoperable until next
trouble-free cold start
09.1.4B
A100 MFA, multifunction armrest
Button, auto front power lift
Auto front power lift button faulty
(output via TeachIn)
09.1.4D
S132 SA/DA switch
Signal fault
09.1.4F
A100 MFA, multifunction armrest
Switch actuation/timeout time
09.1.A2
Y181 [FKH] comfort front power lift control
valve
EEPROM error (valve) Valve moves to neutral and
locks
3. Faults and remedy
Maintenance 171
530.020.020.011 Rev.A