Audi 243 - General Overview of Control Strategies; Control Strategy Summary Chart

41
Allroad quattro control strategies
4-level air suspension + additional shift stage
02035 8060
5
100 120 130 20030
General overview
Control unit 4Z7 907 553A/B
ESP safety-switching
Automatic lowering
Parking level control
v >70 km/h: Engine intervention
v >50 km/h: Acoustic and visual warning in low range
Air supply: control primarily via pressure accumulator <36 km/h
Vehicle speed v in km/h
v <30 km/h: shift to low range possible
Additional shift stage
Air supply: control primarily via compressor >36 km/h Pressure accumulator filled >36 km/h
Motorway mode: Lowering: >120 km/h >30 seconds Raising: <70 km/h >120 seconds
<35 km/h >30 seconds <5 km/h immediately
Manual mode: - no parking level control - no motorway mode - automatic lowering from HL2
and HL1; ESP safety- switching remains active
Automatic mode: - parking level control (HL1) - motorway mode: - automatic lowering from HL2 and HL1. - ESP safety-switching
LL NL HL1 HL2
243_040
Control unit 4Z7 907 553B: Automatic mode: - no parking level control - automatic raising to HL1
<60 km/h >30 seconds <30 km/h immediately