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Remove/install air suspension control unit - AR32.22-P-6000EW

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MODEL 212.0/1 with CODE (489) AIRmatic (air suspension with continuous damper adjustment) with CODE (488) Steel/air suspension 

MODEL 212.2 

MODEL 218 with CODE (489) AIRmatic (air suspension with continuous damper adjustment) with CODE (488) Steel/air suspension 

Shown on model 212 

Fig 1: Air Suspension Control Unit Install/Remove Components - Shown On Model 212
G09976083Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Move the front passenger seat into the rearmost position    
2 Fold back floor covering (1) in front passenger footwell    
3 Unscrew plastic nuts (3) and fold step plate (4) to rear    
4 Push locking slide of the two couplings (6) on the AIRmatic control unit (N51/3) in the direction of the arrow as far as the stop and detach electrical connections    
5 Disconnect electrical connector (5)    
6 Remove bolts (2)    
7 Remove AIRmatic control unit (N51/3)    
8 Install in the reverse order    
9 Perform control unit adaptations using STAR DIAGNOSIS, read out fault memory and erase if necessary When replacing AIRmatic control unit (N51/3). AD00.00-P-2000-04A
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
10 Perform engine test run and check AIRmatic for proper operation