How to replace the Coolant Temperature Sensors on 2007 Mercedes-Benz C350?

ECT sensor of 2001-2005 V6 models is located on the timing chain cover. Lift up the engine cover, evacuate the coolant, unactivate the sensor, and change the O-ring. On 2006+ V6 cars, the sensor is on the left cylinder head. In the case of 2002 and 2003-2005 four-cylinder models, sensor replacement works as follows.

Genuine 2007 Mercedes-Benz C350 Coolant Temperature Sensors

Coolant Temperature Sensor

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2007 Mercedes-Benz C350 Air Intake Temperature Sensor
Part Number: 000-905-61-02
$22.57 MSRP: $31.00
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Product Specifications
- Other Name: Temperature Sensor
- Replaces: 000-905-06-00, 004-153-97-28, 099-905-37-00
- Item Weight: 1.00 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 000-905-61-02
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
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Fits the following 2007 Mercedes-Benz C350 Submodels:
- 4Matic, Base, Luxury, Sport | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS

2007 Mercedes-Benz C350 Coolant Temperature Sensors Parts Q&A

Q: How to replace the Coolant Temperature Sensors on 2007 Mercedes-Benz C350?
A: ECT sensor of 2001-2005 V6 models is located on the timing chain cover. Lift up the engine cover, evacuate the coolant, unactivate the sensor, and change the O-ring. On 2006+ V6 cars, the sensor is on the left cylinder head. In the case of 2002 and 2003-2005 four-cylinder models, sensor replacement works as follows.