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Yaw Rate Sensor Replacement
 
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Pelican Technical Article:

Yaw Rate Sensor Replacement

Steve Vernon

Time:

2 hours2 hrs

Tab:

$320

Talent:

**

Tools:

Trim removal tool, E12 socket, T45 Torx driver, 10mm socket or wrench

Applicable Models:

Mercedes-Benz C250 (2012-14)
Mercedes-Benz C300 (2008-14)
Mercedes-Benz C350 (2008-14)

Parts Required:

Yaw rate sensor

Hot Tip:

The sensors are sensitive to shock; use care when working with them

Performance Gain:

Working ESP

Complementary Modification:

Clean carpet and interior beneath seats

The yaw rate sensor is located below the driver side seat and is used to measure the yaw, lateral and longitudinal acceleration of the rotation around a vertical axis. This sensor is used to supply information to the Electronic Stability Program and has been known to fail in the past. If you are getting an error code for the yaw sensor and need to replace it this article will show you how.

The sensors are sensitive to impact so use care when working with it and be careful not to drop it.

The sensor is located under the driver side seat.
Figure 1

The sensor is located under the driver side seat. You will need to remove the seat to replace the sensor so please see our article on seat removal for additional assistance.

With the driver seat removed you will need to remove the air duct.
Figure 2

With the driver seat removed you will need to remove the air duct. The plastic air duct is removed by pushing it towards the rear of the vehicle (red arrow).

Next, remove the doorsill plate by inserting a trim removal tool under the plate and gently prying it up (red arrows).
Figure 3

Next, remove the doorsill plate by inserting a trim removal tool under the plate and gently prying it up (red arrows).

The plate sits in the lower A-pillar trim piece at the front and will need to be gently pried straight up and out from it.
Figure 4

The plate sits in the lower A-pillar trim piece at the front and will need to be gently pried straight up and out from it.

With the sill removed you can see the series of clips on the chassis that hold it in place (red arrows).
Figure 5

With the sill removed you can see the series of clips on the chassis that hold it in place (red arrows).

Pass the wiring for the seat controls through the opening in the carpet and carefully fold the carpet back.
Figure 6

Pass the wiring for the seat controls through the opening in the carpet and carefully fold the carpet back.

With the carpet back you can see the yaw sensor (red arrow).
Figure 7

With the carpet back you can see the yaw sensor (red arrow). Begin to remove it by first disconnecting the wiring harness (yellow arrow).

Next, use a 10mm wrench or deep socket to remove the two nuts holding it in place.
Figure 8

Next, use a 10mm wrench or deep socket to remove the two nuts holding it in place. The sensors are sensitive to impact so do not hit it with the wrench or drop it. Installation is the reverse of removal.

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Page last updated: Wed 7/26/2017 03:06:58 AM