Removing and Installing

Front Parking Aid Sensor, Removing and Installing

• The following illustrations show how to remove and install the left front parking aid sensor (G255).

• Removing and installing the other parking aid sensors is identical.

• Turn off the ignition and all electrical consumers.

• Remove the key.

Removing

- Remove the front bumper cover. Refer to Front Bumper; Front Bumper Assembly Overview.

• Always follow the sequence for removing the sensor.

• Otherwise, the sensor may be damaged. Hairline cracks which lead to sensor failure can develop if too much force is used on the sensor.

• Remove the sensor from the bracket first and then disconnect the connector from the sensor.

- Push the locking mechanisms - arrows - on the sensor mount - 1 - toward the outside.






- Pull the sensor - 2 - backward out of the sensor bracket with the wires connected.

When removing the sensor, make sure that the decoupling ring (black silicone ring) remains on the sensor head and does not remain in the bracket or get lost.

Do not bend the decoupling ring.

- Disconnect the connector - 2 - and remove the sensor - 1 -.






Installing

Install in reverse order of removal. Note the following:

• Do not bend the decoupling ring.

• An incorrect or damaged coupling ring can lead to malfunctions.

• Replace any damaged decoupling rings and be sure install the correct decoupling ring.

Since the lengths of the sensor heads of the front parking aid are different, the high coupling rings installed are also different.

- Make sure the correct decoupling ring is installed on the sensor head.











- Replace the sensor decoupling ring - 1 -.

- Install the sensor in the correct location in the bumper cover.

Sensor brackets are designed in different shapes and must be matched to the respective component location in the bumper cover.

Be sure to align the electric connection on the sensor when installing it.

Parking aid sensors allocation inside the front bumper cover:






1. LF - outer left

2. FLC - front left center

3. FRC - front right center

4. RF - outer right


Make sure that the sensors - 1 -, - 2 -, - 3 - and - 4 - are matched up with the connectors.

When removing the sensor, make sure that the decoupling ring (black silicone ring) remains on the sensor head and does not remain in the bracket or get lost.

Both retaining clips on the sensor holder must engage audibly when installing sensor.

- Make sure the sensor is seated correctly in the bracket after installation.






Dimension - a - for the circular gap between the sensor head and bumper cover must be even all around on the outer side of the bumper cover.