What should you check before assuming the thermostat is responsible for a cooling system problem on 2002 Mercedes-Benz C320?

Check the drive-belt tension, temperature gauge and coolant level before attributing the problems in cooling to the thermostat. The thermostat can be stuck open in case the engine warms slowly. Put it into hot water and when it does not open/close correctly, change it, remembering to fill it up and bleed the cooling system again.

Genuine 2002 Mercedes-Benz C320 Thermostat

Engine Coolant Thermostat

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2002 Mercedes-Benz C320 Thermostat Housing
Part Number: 112-203-02-75
$42.60 MSRP: $60.00
You Save: $17.40 (29%)
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Product Specifications
- Other Name: Thermostat Element; Thermostat Housing
- Replaces: 112-200-00-15, 112-200-00-15-28
- Item Weight: 1.10 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 112-203-02-75
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
More Info
Fits the following 2002 Mercedes-Benz C320 Submodels:
- 4Matic, Base | 6 Cyl 3.2 L FLEX, 6 Cyl 3.2 L GAS

2002 Mercedes-Benz C320 Thermostat Parts Q&A

Q: What should you check before assuming the thermostat is responsible for a cooling system problem on 2002 Mercedes-Benz C320?
A: Check the drive-belt tension, temperature gauge and coolant level before attributing the problems in cooling to the thermostat. The thermostat can be stuck open in case the engine warms slowly. Put it into hot water and when it does not open/close correctly, change it, remembering to fill it up and bleed the cooling system again.