logo

BMW 740Li xDrive 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

(122)

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.

See availability

Customer Ratings

(122)

Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a BMW 740Li xDrive Car Thermostat Replacement is $613 with $347 for parts and $266 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 BMW 740Li xDriveL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$991.54Shop/Dealer Price$1177.77 - $1709.53
2013 BMW 740Li xDriveL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$970.82Shop/Dealer Price$1150.28 - $1674.93
2014 BMW 740Li xDriveL6-3.0L TurboService typeCar Thermostat ReplacementEstimate$974.42Shop/Dealer Price$1154.86 - $1682.28
Show example BMW 740Li xDrive 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

Number of BMW Car Thermostat Replacement services completed
1342+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(122)
Rating Summary
119
1
0
0
2
119
1
0
0
2

Eduardo

13 years of experience
41 reviews
Request Eduardo
Eduardo
13 years of experience
Request Eduardo
by Mariano
BMW 740Li xDrive L6-3.0L Turbo - Pre-purchase Car Inspection - Villa Park, California
Eduardo is a top rate professional. I had him do a pre-purchase inspection on an out of state BMW 7 series that I am considering purchasing. He is very knowledgable, a great communicator and is willing to go the extra mile to ensure that I understood all aspects of this car, good or bad prior to making a decision to purchase. I will definitely use him again.

Joe

1 years of experience
13 reviews
Request Joe
Joe
1 years of experience
Request Joe
by Chris
BMW 740Li xDrive L6-3.0L Turbo - Serpentine/Drive Belt - Norman, Oklahoma
Phenomenal mechanic and an even better person. I’ll be recommending Joe to all family and friends.

Christopher

6 years of experience
11 reviews
Request Christopher
Christopher
6 years of experience
Request Christopher
by Orlando
BMW 740Li xDrive L6-3.0L Turbo - Trunk Lift Support Shocks - Sacramento, California
Punctual and professional. Christopher is a good mechanic, he explained what he’s working on and how long the work is.

Alex

24 years of experience
464 reviews
Request Alex
Alex
24 years of experience
Request Alex
by Kevin
BMW 530i L6-3.0L - Thermostat - McKinney, Texas
After Alex finished my radiator hose and thermostat, my car runs great. Job well done!

Excellent Rating

(122)
Rating Summary
119
1
0
0
2
119
1
0
0
2
Number of BMW Car Thermostat Replacement services completed
1342+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

Top 10 Scenic Drives in Kansas
There’s a reason why Dorothy said, “There’s no place like home.” There really isn’t any other state quite like Kansas. Its terrain is incredibly open, whether in flat prairies or rolling hills; it just seems to stretch into forever. While...
Read more
How to Buy a Good Quality Gasket
There There are a wide variety of gasket types on a typical vehicle, from head gaskets which are installed between the cylinder head and the engine block to engine gaskets which seal out harmful elements and keep the engine safe...
Read more
How Long Does a Power Brake Booster Last?
When When you press the brake pedal, your car slows down and eventually stops. Most of us put little more thought into it. We know that our brake pads need to be replaced periodically, and we’ll probably need to have...
Read more

Battery won't charge

Your 2008 Lexus LS460 may need to be moved to have easier access to the battery. The battery needs to be checked and the starting system operations verified. The battery could be dead, or there could be another problem within...
Read more

Engine starts to sputter at around 2k rpm when at normal operating temperature.

Hi There, It sounds like you may have a bad oxygen sensor. As you may know, when the engine is cold there is more fuel supplied to the motor that is gradually trimmed out as the engine warms up. If...
Read more

Is it possible to change the gear shifter on 2016 Acura TLX?

Unfortunately I can't give you a definitive yes or no answer. There's a saying when it comes to modifying vehicles: Anything can be done if your pockets are deep enough. Off the top of my head I would say it...
Read more
  1. Home
  2. Estimates
  3. BMW
  4. 740Li xDrive
  5. Car Thermostat Replacement

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

Read FAQ
GET A QUOTE