Front Corner Radar, Calibrating

Special tools and workshop equipment required 

• Calibration Tool: VAS6350A 
• Calibration Tool - Spacing Laser: VAS6350/2A 
• Calibration Tool - Lane Change Calibration Tool: VAS6350/4 
• Vehicle Diagnostic Tester

Calibration/Adjustment must be Performed if:

• "No or incorrect basic setting/adaptation" is actively entered in the DTC memory of the Control Module for Left Front Object Detection Radar Sensor -J1088- /Control Module for Right Front Object Detection Radar Sensor -J1089- was removed and installed or replaced.
• The Control Module for Left Front Object Detection Radar Sensor -J1088- /Control Module for Right Front Object Detection Radar Sensor -J1089- was removed and installed or replaced.
• The front bumper cover has been damaged or replaced.
• The front bumper cover was painted near the control modules while installed.

TIP:

Calibrating both control modules for object detection is not necessarily required. Depending on the conditions (for example, only one of the two object detection control modules was replaced, or the bumper was only painted on one side), it is sufficient to only calibrate the affected control module.

Preparing for Calibration

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1. Calibration Tool - Linear Laser: VAS6350/3A 
   • With "laser protective eyewear"
   • On the Calibration Tool: VAS6350A 
   • Refer to Calibration Tool - Line Laser: VAS6350/3A  Owner's Manual for handling.
2. Calibration Tool: VAS6350A 
   • Must be parallel with the vehicle
   • Dimension -a- side sill area = dimension -a- front bumper cover area
   • Measure the distance to the reference point on the vehicle, dimension -b-. Refer to FRONT CORNER RADAR, CALIBRATING - Dimension -b- = 1000 ± 10 mm 
3. Level
   • On the Calibration Tool: VAS6350A 
   • To check the horizontal position of the Calibration Tool: VAS6350A 
4. Reference Point on Vehicle
   • In the center between the Right Front Parking Aid Sensor -G252- and the Right Front Parallel Parking Assistance Sensor -G569- or the Left Front Parking Aid Sensor -G255- and the Left Front Parallel Parking Assistance Sensor -G568-.
5. Calibration Tool - Lane Change Calibration Tool: VAS6350/4 
   • If installed correctly, the vehicle electrical system voltage wire must be connected to the calibration device at the lower left.
   • Distance from the upper edge of the Calibration Tool - Lane Change Calibration Tool: VAS6350/4  to the floor: dimension -c-. Refer to FRONT CORNER RADAR, CALIBRATING - Height adjustment of the upper edge of the Calibration Tool - Lane Change Calibration Tool: VAS6350/4 to the floor. 
6. Scale
   • Adjust the distance of the mount for the Calibration Tool - Lane Change Calibration Tool: VAS6350/4 
   • Dimension -d- on the scale. Refer to FRONT CORNER RADAR, CALIBRATING - The needled on the base of the Calibration Tool - Lane Change Calibration Tool: VAS6350/4 must align with adjustment dimension -d- on the measuring scale -arrow- on the Calibration Tool -VAS6350A-. 
7. Calibration Tool - Spacing Laser: VAS6350/2A 
   • For distance measurement
   • Refer to the Calibration Tool - Spacing Laser: VAS6350/2A  Operating Instructions for handling.

Preliminary Work

• Move the vehicle onto a solid, flat surface.
• Move the wheels so that they are in a straight-ahead position.
• For vehicles with rear axle steering, steer the rear axle to the zero position. Refer to Rear Axle Steering . This is the only way to ensure that the rear axle steering is in the straight-ahead position.
• Vehicles without air suspension: deflect the springs several times and let settle.
• Electromechanical parking brake applied.
• Vehicle exterior lamps switched off.
• All vehicle doors closed.
• Remove the label with the metal foil from the bumper cover, if necessary.
• Connect the battery charger for the battery support mode. Refer to BATTERY, CHARGING .
• Before starting the calibration/adjustment, check the DTC memory and correct all displayed entries.

Procedure 

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-- Position the Calibration Tool: VAS6350A  parallel to the vehicle.

• Dimension -a- side sill area = dimension -a- front bumper cover area

-- Move the level -arrow- on the Calibration Tool: VAS6350A  so that it balances horizontally by turning the plastic feet.

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-- Wear "laser protective eyewear".

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-- Install the Calibration Tool - Linear Laser: VAS6350/3A  to the Calibration Tool: VAS6350A  and turn on.

-- Align the Calibration Tool: VAS6350A  .

• The linear laser beam must run through the center point of the front wheel
• The parallel alignment of the Calibration Tool: VAS6350A  to the vehicle must be maintained, dimension -a- = dimension -a-.

-- Attach the Calibration Unit for Lane Change Assist: VAS6350/4  to the Calibration Tool: VAS6350A  and align.

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-- The needled on the base of the Calibration Tool - Lane Change Calibration Tool : VAS6350/4  must align with adjustment dimension -d- on the measuring scale -arrow- on the Calibration Tool -VAS6350A-.

-- Height adjustment of the upper edge of the Calibration Tool - Lane Change Calibration Tool : VAS6350/4  to the floor.

-- Connect the Calibration Tool - Lane Change Calibration Tool: VAS6350/4  -1- to the vehicle electrical system voltage and switch it on at the voltage switch -2-.

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• The green LED -4- must turn on.

-- If the red LED -3- turns on, then check the Calibration Unit for Lane Change Assist: VAS6350/4  -1-.

-- Using the Calibration Tool - Spacing Laser: VAS6350/2A  , measure the distance from the Calibration Tool - Lane Change Calibration Tool: VAS6350/4  -3- to the reference point on the vehicle and adjust to dimension -b-. Refer to the Calibration Tool - Spacing Laser: VAS6350/2A  Operating Instructions.

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• Reference point: in the center between the Right Front Parking Aid Sensor -G252- and the Right Front Parallel Parking Assistance Sensor -G569- or the Left Front Parking Aid Sensor -G255- and the Left Front Parallel Parking Assistance Sensor -G568-.
• Dimension -b- = 1000 ± 10 mm 

-- To adjust the dimension -b-, move the Calibration Tool: VAS6350A  sideways.

• Parallel alignment and orientation of the Calibration Tool: VAS6350A  must not change.

Calibration Procedure

The following should not occur during the calibration procedure:

• No metallic reflectors may be located within a 2 m radius of the calibration tool (meaning tool carts, metal cabinets).
• Vehicle doors must not be opened or closed.
• People must not sit in the vehicle.
• People must not go between the vehicle and the Calibration Tool - Lane Change Calibration Tool: VAS6350/4  .

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

Procedure for Control Module for Right Front Object Detection Radar Sensor

• Diagnostic-capable systems
• 00DB - Control Module for Right Front Object Detection Radar Sensor -J1089-
• 00DB - Control Module for Right Front Object Detection Radar Sensor, Functions
• 00DB - Calibrating

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

Procedure for Control Module for Left Front Object Detection Radar Sensor

• Diagnostic-capable systems
• 00DC - Control Module for Left Front Object Detection Radar Sensor -J1088-
• 00DC - Control Module for Left Front Object Detection Radar Sensor, Functions
• 00DC - Calibrating

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

-- Switch off the ignition after successful calibration.

-- Disconnect the Vehicle Diagnostic Tester from the data link connector.

-- Disconnect the battery charger. Refer to BATTERY, CHARGING .