How to change the thermostat on a Mercedes Benz?
Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure. Remove small hose going from the top of the thermostat housing to the coolant reservoir (green arrows). Next remove the two electrical connectors (green and red arrows).
When does the coolant thermostat need to close?
A coolant thermostat allows the coolant to circulate when the engine has reached a predetermined temperature. It should close when the engine is cold to allow it to warm up faster. Thermostats can fail and should be inspected for corrosion when servicing the cooling system.
Where is the thermostat on a 1977 450SL?
PLEASE NOTE: If you have a 1977 450SL, the thermostat is not located in the housing. Instead, it is mounted to the right side of the housing for the top hose adapter you removed. Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure.
Where is the thermostat located on a car?
The thermostat is located on the side of the water pump where the lower hose from the radiator connects. If you are going to be working on the thermostat, make sure the car is cool and not under pressure. Working on a hot engine or one under pressure can cause serious harm (coolant is also very toxic) and should never be attempted.
Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure. Remove small hose going from the top of the thermostat housing to the coolant reservoir (green arrows). Next remove the two electrical connectors (green and red arrows).
PLEASE NOTE: If you have a 1977 450SL, the thermostat is not located in the housing. Instead, it is mounted to the right side of the housing for the top hose adapter you removed. Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure.
Why do you need to change the thermostat on your car?
The thermostat helps control the engines temperature. If your car is running too hot and there is the proper amount of coolant in the car and it is not leaking, or your car is taking a long time to warm up, there is a very good chance your thermostat is bad and needs to be replaced.
The thermostat is located on the side of the water pump where the lower hose from the radiator connects. If you are going to be working on the thermostat, make sure the car is cool and not under pressure. Working on a hot engine or one under pressure can cause serious harm (coolant is also very toxic) and should never be attempted.
The thermostat helps control the engines temperature. If your car is running too hot and there is the proper amount of coolant in the car and it is not leaking, or your car is taking a long time to warm up, there is a very good chance your thermostat is bad and needs to be replaced.