Pneumatic suspension system Part 2 4-level air ... - Volkspage

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Operation and display Display The four LEDs which are arranged one on top of the other in the display zone illuminate continuously to indicate the current level status. Only the control procedure which has been triggered by a level change (whether automatically or manually) is indicated by one or several flashing LEDs. Once the target level has been reached, the flashing changes to continuous illumination. If the actual level deviates greatly from the reference level, this is indicated to the driver with flashing LEDs (according to a level change). Significant deviations are: – at least one axle level is below the next level down. – both axle levels are above the next level up. The LEDs in the “raise” and “lower” buttons indicate actuation and the control direction. If the LED flashes, a level request has been denied (e.g. if the driving speed is too high) Manual mode display Actuation/control direction display Actuation/control direction display 243_020 Lower button Raise button ESP button Display zone with 4 level-indicating LEDs 8
Other button functions Automatic switching The so-called “manual mode” can be switched on or off by pressing the “raise” or “lower” button for at least 3 sec. The yellow LED marked “man” indicates to the driver that the vehicle is in manual mode. The automatic “parking level control” and “motorway mode” functions are deactivated in manual mode. Display example: Manual mode and NL Display example: Raising from LL to HL1 243_022 Switching off control system The control system is switched on or off by pressing both level buttons for longer than 5 seconds. When the control system is switched off, the LEDs in the operating unit for manual mode, both level buttons and the warning lamp K134 are illuminated. The level-indicating LEDs show the level set. The corresponding LED is continuously illuminated. A control system that has been switched off will be automatically switched back on again when the driving speed exceeds approx. 10 km/h (unless the lifting platform mode is recognised). The control system can also be switched off using the diagnostic testers (see Workshop Manual). Display example: Raising from HL1 to HL2 Display example: Lowering from NL to LL 243_023 243_024 243_025 It is often advisable to switch off the system during repair work (e.g. during axle measurement or if the pressure lines have been detached) in order to prevent the compressor from running unnecessarily. 9
Page 1 and 2: 243 Service. Pneumatic suspension s
Page 3 and 4: Contents Page System description .
Page 5 and 6: The 4-level air suspension system i
Page 7: Operation and display Operation The
Page 11 and 12: Motorway mode If the vehicle travel
Page 13 and 14: ESP safety switching For technical
Page 15 and 16: Rear suspension strut The bayonet c
Page 17 and 18: Air supply The compressor The const
Page 19 and 20: Pressure accumulator The pressure a
Page 21 and 22: Solenoid valves The 4-level air sus
Page 23 and 24: Vehicle level senders G76, G77, G78
Page 25 and 26: Construction/design The angle senso
Page 27 and 28: Level sensors, summary The advantag
Page 29 and 30: Interfaces CAN information exchange
Page 31 and 32: The trailer operation signal … ..
Page 33 and 34: Key to function diagram E281 Self-l
Page 35 and 36: Modes Height mode/driving mode Reac
Page 37 and 38: Trailer operation The correct posit
Page 39 and 40: Basic system setting The basic syst
Page 41 and 42: General overview Control unit 4Z7 9
Page 44: All rights reserved, including the

Pneumatic suspension system Part 2 4-level air ... - Volkspage

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