AUDI A6 ALLROAD 1999 C5 / 2.G Pneumatic Suspension System

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Allroad quattro control strategies
4-level air suspension + additional shift stage
0203580 60
5100 120 130 200
30
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/hVehicle 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 HL2243_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

42
Notes

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Service.For internal use only All rights reserved, including
the right to make technical
changes.
AUDI AG
Dept. I/VK-5
D-85045 Ingolstadt
Fax 0841/89-36367
040.2810.62.20
Technical status 11/00
Printed in Germany
Pneumatic suspension system Part 2
4-level air suspension
in the Audi allroad quattroDesign and function
Self-study programme 243
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