What should you check before assuming the thermostat is responsible for a cooling system problem on Mercedes-Benz C230?

Probably everyone knows by the time they reach adulthood that, before assuming something is wrong in a cooling system, the first step is to look at the amount of coolant in the system, the tightness of its drive-belt, or the operation of its temperature gauge or temperature light. When it takes a long time before the engine warms up, it is possible that the thermostat has become stuck open, and should be changed. When the engine is too hot to run, or overheats, the thermostat should also be extensively tested, which in turn cannot be done unless the thermostat is out of the car. When the thermostat will not close at room temperature, it is not functioning properly, and needs to be replaced; the interim economy and the emissions of driving cars and trucks without the thermostat can be detrimental. To test a thermostat, place it in a container of cold water together with a thermometer, warm the water and record the temperature at which the thermostat starts to open and when it is completely open and compare this to the specs. In case the thermostat is not opening and closing as per specifications or becomes stuck in any position it needs replacement. To replace: drain the engine coolant, take out the trim panel and coolant hose(s) in the cover of the thermostat housing, and unbolt the housing cover. Wipe down the surfaces, replace an O-ring, and reassemble everything in reverse, also refilling and bleeding the cooling system and inspecting for leaks and correct functionality. Other procedures to be followed correspond to the type of engine to be installed; e.g., before installation, hoses must be removed, all old gaskets and sealants cleaned and serpentine belt must be removed.

Genuine Mercedes-Benz C230 Thermostat

Engine Coolant Thermostat

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5 Thermostats found

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Mercedes-Benz C230 Thermostat
Part Number: 271-200-00-15
$26.23 MSRP: $36.00
You Save: $9.77 (28%)
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Product Specifications
- Other Name: Thermostat
- Replaced by: 271-203-05-75
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following Vehicles:
- 2003-2005 Mercedes-Benz C230 | Kompressor | 4 Cyl 1.8 L GAS
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Mercedes-Benz C230 Thermostat
Part Number: 111-200-09-15
$35.38 MSRP: $48.50
You Save: $13.12 (28%)
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Product Specifications
- Replaces: 111-200-04-15, 111-200-09-15-05
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following Vehicles:
- 1997-2000 Mercedes-Benz C230 | Base, Kompressor | 4 Cyl 2.3 L GAS
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Mercedes-Benz C230 Thermostat
Part Number: 111-200-17-15
$39.00 MSRP: $55.00
You Save: $16.00 (30%)
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Product Specifications
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following Vehicles:
- 2002 Mercedes-Benz C230 | Kompressor | 4 Cyl 2.3 L GAS
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Mercedes-Benz C230 Thermostat Unit
Part Number: 272-200-04-15
$87.60 MSRP: $122.00
You Save: $34.40 (29%)
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Product Specifications
- Other Name: Coolant Thermostat; Thermostat Unit
- Replaces: 272-200-01-15, 272-200-00-15
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following Vehicles:
- 2006-2007 Mercedes-Benz C230 | Sport | 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
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Mercedes-Benz C230 Thermostat Housing
Part Number: 111-200-16-15
$446.40 MSRP: $620.00
You Save: $173.60 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following Vehicles:
- 2002 Mercedes-Benz C230 | Kompressor | 4 Cyl 2.3 L GAS

Mercedes-Benz C230 Thermostat

The Mercedes-Benz C230 Thermostat maintains the optimal temperature of the engine to ensure smooth and efficient running of the car. It is a closed-loop control device that is directly in front of the engine block and detects the coolant temperature, opening or closing depending on the temperature it wants to maintain in the sweet spot that is required to achieve performance. Similar to most automotive systems that are typical of the Mercedes-Benz powertrain, the system uses a mechanical wax pellet core, which expands with the temperature of the coolant, opening a valve and permitting the coolant to flow to the radiator, and contracts as the coolant temperature diminishes, limiting circulation and accelerating warming during cold starts. The previous versions of the model borrowed the concepts of the traditional bimetal strip regulators, which flexed on heat, but the wax style became the staple as it provides larger movement, quicker response, and longer life under the regular vibration that a Mercedes-Benz can experience on the road. The significant difference across the years of production is not electronic versus analog but bimetal versus wax, where the latter offers more accurate control and the setting is also preserved even when electrical power is interrupted. C230 drivers are unaware of these micro-adjustments as the Thermostat maintains the balance without any visible metal distortion due to overheating, and prevents the motor from becoming too cold and thus wasting fuel while also making the engine produce less power. Briefly, the Thermostat is a small mechanical guardian that forms the foundation of the mythical dependability of a Mercedes-Benz engine.

Every OEM part goes through strict quality checks. The checks keep you safe and make Thermostat tough. They keep performance the same as your original parts. If your Mercedes-Benz C230 needs OEM parts, visit our catalog. You will find extensive genuine Mercedes-Benz C230 parts. We offer a wide selection at competitive prices, and with clear fit details and simple guidance, choosing what you need is effortless. Each of our parts has a manufacturer's warranty. You will like our simple return policy. We pack and ship fast, and you get your order quickly. Shopping here feels easy and enjoyable.

Mercedes-Benz C230 Thermostat Parts and Q&A

Thermostat Housing
111-200-16-15
Q: What should you check before assuming the thermostat is responsible for a cooling system problem on Mercedes-Benz C230?
A:
Probably everyone knows by the time they reach adulthood that, before assuming something is wrong in a cooling system, the first step is to look at the amount of coolant in the system, the tightness of its drive-belt, or the operation of its temperature gauge or temperature light. When it takes a long time before the engine warms up, it is possible that the thermostat has become stuck open, and should be changed. When the engine is too hot to run, or overheats, the thermostat should also be extensively tested, which in turn cannot be done unless the thermostat is out of the car. When the thermostat will not close at room temperature, it is not functioning properly, and needs to be replaced; the interim economy and the emissions of driving cars and trucks without the thermostat can be detrimental. To test a thermostat, place it in a container of cold water together with a thermometer, warm the water and record the temperature at which the thermostat starts to open and when it is completely open and compare this to the specs. In case the thermostat is not opening and closing as per specifications or becomes stuck in any position it needs replacement. To replace: drain the engine coolant, take out the trim panel and coolant hose(s) in the cover of the thermostat housing, and unbolt the housing cover. Wipe down the surfaces, replace an O-ring, and reassemble everything in reverse, also refilling and bleeding the cooling system and inspecting for leaks and correct functionality. Other procedures to be followed correspond to the type of engine to be installed; e.g., before installation, hoses must be removed, all old gaskets and sealants cleaned and serpentine belt must be removed.