BMW 335is Car Thermostat Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(4)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(4)

Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a BMW 335is Car Thermostat Replacement is $559 with $265 for parts and $294 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2013 BMW 335isL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$855.06Shop/Dealer Price$1000.68 - $1407.77
2011 BMW 335isL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$836.14Shop/Dealer Price$975.27 - $1377.49
2012 BMW 335isL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$836.14Shop/Dealer Price$975.36 - $1377.66
Show example BMW 335is Car Thermostat Replacement prices

What is an engine cooling system thermostat and how does it work?

The car's engine cooling system thermostat is a small valve within a cooling system passageway that opens and closes in response to the temperature of the circulating engine coolant. When your car is first started and the coolant is cold, the valve in the thermostat will be in the closed position, circulating the coolant flow only within the engine instead of flowing to the radiator, which allows the engine to warm up fast, promoting fuel efficiency, low emissions, and reduced engine deposits. Once the engine coolant reaches the design temperature, usually around 195 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between 195 to 225 degrees Fahrenheit.

Thermostat

When to consider replacing the engine cooling system thermostat:

  • Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat. Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat.
  • Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction.
  • Cooling system repairs. All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown.

How do mechanics replace the engine cooling system thermostat?

  • Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing.
  • The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
  • All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine.
  • The thermostat housing bolts are tightened to original equipment manufacturer (OEM) specifications using a calibrated inch-pound torque wrench.
  • The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air.
  • The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun. This will confirm the thermostat is open. Finally, the engine is checked for leaks.

Is it safe to drive with an engine cooling system thermostat problem?

No. If it has been determined that there is a thermostat problem, it should be repaired right away. Failure to do so can cause substantial and costly damage to the engine.

When replacing the engine cooling system thermostat keep in mind:

  • Engine overheating due to causes other than a faulty thermostat, will themselves damage a thermostat. Therefore, always replace the thermostat if the engine overheats, even if the thermostat was not the initial cause of the overheating.
  • The thermostat should be replaced anytime you have major work done on the coolant system. It is convenient and costs little during such repairs and insurance against future breakdown.
  • OEM thermostats are the best ones to use and you can request your mechanic to install only the OEM thermostat. Dealer supplied, OEM thermostats are sometimes more costly but are generally higher quality and specifically engineered for your car.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(4)

Rating Summary
4
0
0
0
0
4
0
0
0
0

John

33 years of experience
1126 reviews
John
33 years of experience
BMW 335is L6-3.0L Turbo - Oil Change - Houston, Texas
On time and very efficient!

Ben

30 years of experience
59 reviews
Ben
30 years of experience
BMW 335is L6-3.0L Turbo - Serpentine/Drive Belt - Acworth, Georgia
Ben did a great job!! I would use him again.

Alex

24 years of experience
464 reviews
Alex
24 years of experience
BMW 335is L6-3.0L Turbo - Brake Pads Replacement (Rear) - Addison, Texas
Alex is my new go-to mechanic. He was very informative and answered all my questions. I won't use anyone else.

Shaun

11 years of experience
542 reviews
Shaun
11 years of experience
BMW 335is L6-3.0L Turbo - Battery - Scottsdale, Arizona
Shaun did a great job.

Excellent Rating

(4)

Rating Summary
4
0
0
0
0
4
0
0
0
0
Number of BMW 335is services completed
44+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform

Recent articles & questions

How to Check a Front End Assembly
If you have worn out components on your front end assembly, it can cause a number of issues with...
How to Troubleshoot a Gas Cap That Won't Click
Gas caps click when they are secure. A damaged gas cap may be caused by a damaged gasket, gas tank filler housing, or debris in the fuel neck.
How to Buy a Good Quality Backseat Baby Monitor
Parents Parents know just how hard it is to keep their little ones safe and secure. That most certainly applies to traveling in the car. You need to be able to keep an eye on your baby at all times,...

Pinging during acceleration

Hi There, Pinging is a result of pre-ignition which means the fuel/air mixture in the cylinder spontaneously explodes, slightly before the spark plug ignites it. There are several things that can cause this to happen. Installing the wrong spark plug...

2012 Nissan altima will not start. New battery, new starter and new [brake](/topics-brake-nissan/) sensor. The steering lock mechanism has already been immobilized. When I press the start button it make a.click and the dashboard goes completely out

The EPC light is on and off and the engine light flashes about 24 times and stops, but it will flash again if stop and go or when I was trying to fight the lose of power and engine tremmors. I don't have money to pay a machanic, so I will be fixing the problem myself. I plan on taking it to advance auto for a code reader. To have a better idea and maybe narrow down what it could be. Milage is 155453, has ran like a top since we bought it.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com