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Home >> Mercedes Benz >> 2016 >> SL550 >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels, Chassis Alignment Check - 231 Chassis >> Testing & Repair >> Check vehicle level at front and rear axle with electronic inclinometer, adjust if necessary - AR40.20-P-0301RK

Check vehicle level at front and rear axle with electronic inclinometer, adjust if necessary - AR40.20-P-0301RK

MODEL 231 

MODIFICATION NOTES

3.9.12 Vehicle level - front axle MODEL 231 except AMG, except CODE 486, except CODE 487 BE40.20-P-1001-02W
3.9.12 Vehicle level front axle Model 231 except AMG, except CODE 486, except CODE 487 BE40.20-P-1001-02W
3.9.12 Vehicle level - front axle MODEL 231 except AMG, with code 486 BE40.20-P-1001-02W
3.9.12 Vehicle level front axle Model 231 except AMG, with CODE 486 BE40.20-P-1001-02W
3.9.12 Vehicle level - front axle MODEL 231 except AMG, with code 487 BE40.20-P-1001-02W
3.9.12 Vehicle level front axle Model 231 except AMG, with CODE 487 BE40.20-P-1001-02W
Fig 1: Inclinometer And Measuring Sensor
G11128842Courtesy of MERCEDES-BENZ USA

Shown: Vehicle with code (487) Active Body Control (ABC), measuring point on front axle 

Fig 2: Checking Vehicle Level At Front Axle With Electronic Inclinometer - Shown On Vehicle With Code (487)
G11128843Courtesy of MERCEDES-BENZ USA

Shown: vehicle with code (487) Active Body Control (ABC), measuring point on rear axle 

Fig 3: Checking Vehicle Level At Rear Axle With Electronic Inclinometer - Shown On Vehicle With Code (487)
G11128844Courtesy of MERCEDES-BENZ USA
INSPECT Check     
1 Carry out preconditions and tests for vehicle level measurement   AR40.00-P-0202A 
2 Clean measuring points IMPORTANT This prevents any measuring errors.  
3 Mount measuring sensor (086a) in the center on spring control arm (17) read off the vehicle level on the inclinometer (086) NOTES
The measurement sensor connecting cable (086b) of the measurement sensor (086a) must face towards the vehicle center.
Otherwise the measurement will be inaccurate.
IMPORTANT Fit measuring sensor (086a) as shown to front axle measuring range (a).
Measure vehicle level at:
  • Measuring point 1 (left front) and
  • Measuring point 2 (right front).

Save measured values.
Vehicle level - front axle
*BE40.20-P-1001-02W 
4 Mount measuring sensor (086a) on the center of the rear axle shaft (65) and read off vehicle level on inclinometer (086) NOTES
The measurement sensor connecting cable (086b) of the measurement sensor (086a) must face towards the vehicle center.
Otherwise the measurement will be inaccurate.
IMPORTANT Fit measuring sensor (086a) as shown to rear axle measuring range (a).
Measure the vehicle level at
  • Measuring point 3 (left rear) and
  • Measuring point 4 (right rear).

Save measured values.
Vehicle level - rear axle
*BE40.20-P-1001-03X 
5 Check the maximum permissible difference in vehicle level between the left and right side of the vehicle IMPORTANT The specified test tolerance applies only when checking the vehicle level but not for calibration.  
    Permissible difference in vehicle level between right and left side of vehicle *BE40.20-P-1002-02W 
    Permissible difference in vehicle level between right and left side of vehicle *BE40.20-P-1002-03X 
  Adjust     
6.1 Adjust vehicle level MODEL 231
without CODE 487 (Active Body Control (ABC))
IMPORTANT If the vehicle level at the front or rear axle is outside the test tolerance, the vehicle level must be adjusted by changing the springs or the spring rubber mounts.
 
6.2 Use STAR DIAGNOSIS to calibrate vehicle level MODEL 231
with CODE 487 (Active Body Control (ABC))
 
REFER TO SELF-DIAGNOSTIC SYSTEMS   IMPORTANT When the vehicle level is outside the test tolerance.
Possible cause: if the vehicle level is not OK after calibration, one or several of the level sensors are mounted incorrectly.
AD00.00-P-2000-04A
    Permissible difference in vehicle level between right and left side of vehicle *BE40.20-P-1002-02W 
    Permissible difference in vehicle level between right and left side of vehicle *BE40.20-P-1002-03X 
7 Adjust headlamps Only if the vehicle level has been calibrated.  
REFER TO MAINTENANCE     AP82.10-P-8260R
CHECK VALUES FOR VEHICLE LEVEL AT FRONT AXLE

Number Designation Model 231 except AMG, except code 486/487 Model 231 with code 486
BE40.20-P-1001-02W Vehicle level - front axle ∠° +2, 36 (±1, 3) +0, 57 (±1, 3)
CHECK VALUES FOR VEHICLE LEVEL AT FRONT AXLE

Number Designation Model 231 with code 487 Model 231 AMG
BE40.20-P-1001-02W Vehicle level - front axle ∠° +0, 73 (±1, 3) -0, 41 (±1, 3)
CHECK VALUES FOR VEHICLE LEVEL AT REAR AXLE

Number Designation Model 231 except code 486/487 Model 231 with code 486
BE40.20-P-1001-03X Vehicle level - rear axle ∠° +0, 37 (±0, 8) -0, 71 (±0, 8)
CHECK VALUES FOR VEHICLE LEVEL AT REAR AXLE

Number Designation Model 231 with code 487 Model 231 AMG
BE40.20-P-1001-03X Vehicle level - rear axle ∠° -0, 81 (±0, 8) -0, 89 (±0, 8)
CHECK VALUES FOR VEHICLE LEVEL AT FRONT AXLE

Number Designation Model 231 except AMG, except code 486/487 Model 231 with code 486
BE40.20-P-1002-02W
 
Permissible difference in vehicle level between right and left side of vehicle
 
When checking ∠° 0, 8 0, 8
When calibrating with StarDiagnosis ∠° - -
CHECK VALUES FOR VEHICLE LEVEL AT FRONT AXLE

Number Designation Model 231 with code 487
BE40.20-P-1002-02W
 
Permissible difference in vehicle level between right and left side of vehicle
 
When checking ∠° 0, 8
When calibrating with StarDiagnosis ∠° 0, 5
CHECK VALUES FOR VEHICLE LEVEL AT REAR AXLE

Number Designation Model 231 except code 486/487 Model 231 with code 486
BE40.20-P-1002-03X Permissible difference in vehicle level between right and left side of vehicle 0, 5 0, 7
CHECK VALUES FOR VEHICLE LEVEL AT REAR AXLE

Number Designation Model 231 with code 487
BE40.20-P-1002-03X Permissible difference in vehicle level between right and left side of vehicle 0, 5