BMW 750i Coolant Reservoir 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

(43)

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

(43)

Coolant Reservoir Replacement Service

How much does a Coolant Reservoir Replacement cost?

On average, the cost for a BMW 750i Coolant Reservoir Replacement is $271 with $176 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$566.17Shop/Dealer Price$688.97 - $1034.85
2007 BMW 750iV8-4.8LService typeCoolant Reservoir ReplacementEstimate$554.09Shop/Dealer Price$686.40 - $1043.87
2012 BMW 750iV8-4.4L Turbo HybridService typeCoolant Reservoir ReplacementEstimate$524.83Shop/Dealer Price$649.82 - $985.35
2011 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$446.15Shop/Dealer Price$551.43 - $827.92
2009 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$446.15Shop/Dealer Price$551.50 - $828.04
2015 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$446.15Shop/Dealer Price$551.47 - $827.99
2017 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$551.17Shop/Dealer Price$673.85 - $1019.64
2013 BMW 750iV8-4.4L TurboService typeCoolant Reservoir ReplacementEstimate$451.15Shop/Dealer Price$556.89 - $833.71
Show example BMW 750i Coolant Reservoir Replacement prices

What is the Coolant Reservoir all about?

Cooling systems on vehicles are meant to remove heat from critical engine components. The fluid or coolant that circulates through the system carries the heat out of the engine to the radiator, where air flow dissipates the heat it contains. A natural reaction to the heat which the fluid experiences is expansion. If the fluid in the cooling system is at the full mark when the engine is cold, the volume will be greater when the fluid is hot due to expansion. Because the cooling system is closed and pressurized when hot, the excess hot coolant needs to go somewhere. It is pushed into a surge tank, or an overflow tank, where it remains until the engine cools down. When the engine cools, the contraction from the fluid still in the system creates a vacuum and the surge tank’s hose draws the coolant back into the system. If the coolant surge tank is cracked or broken, the coolant will leak onto the ground. An airlock will form in the cooling system when the surge tank hose only draws in air instead of coolant.

Keep in mind:

  • Engine coolant is extremely hot when the engine is at operating temperature. Never open the cooling system when the engine is hot.
  • The surge tank should be flushed when the coolant is being changed out.

How it's done:

  • The coolant is drained into a suitable container and the coolant recovery reservoir cap is removed.

  • The old coolant recovery reservoir is disconnected from all of the hoses hoses and pulled free of the vehicle.

  • The new coolant recovery reservoir is installed into the vehicle and secured. The coolant hoses are installed and secured using new clamps.

  • The coolant is refilled and purged of air as per manufacturer recommendation.

  • The vehicle coolant recovery reservoir is checked for leaks and proper operation.

Our recommendation:

The surge tank itself should never need attention unless it is damaged or broken. Excess engine heat may also warp the container, though it is not common. If your coolant surge tank is broken or leaking, have one of our expert mechanics replace it.

What common symptoms indicate you may need to replace the Coolant Reservoir?

  • Coolant leaking onto the ground when engine is hot.
  • Engine overheats due to an airlock.

How important is this service?

The surge tank is part of the cooling system. It may seem to be auxiliary, but it is essential to proper operation. If the surge tank leaks coolant out, an airlock will form in the engine and it could overheat, causing damage. If your surge tank is broken, have it replaced as soon as possible to prevent further issues.

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

(43)

Rating Summary
38
3
1
0
1
38
3
1
0
1

Marco

9 years of experience
9 reviews
Marco
9 years of experience
750i 2013 - Oil Change - Oceanside, CA
Professional and knowledgeable

Chris

15 years of experience
2435 reviews
Chris
15 years of experience
750i 2008 - Serpentine/Drive Belt - Westminster, CA
Chris was great, excellent work, quick efficient and saved me a thousand dollars if done elsewhere !

Michael

5 years of experience
89 reviews
Michael
5 years of experience
750i 2006 - Transmission Fluid Service - Lakewood, WA
Very Satisfied

Corey

15 years of experience
184 reviews
Corey
15 years of experience
750i 2008 - Check Engine Light is on - Charlotte, NC
He was very knowledgeable about the problem with my car

Excellent Rating

(43)

Rating Summary
38
3
1
0
1
38
3
1
0
1
Number of BMW 750i services completed
473+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

What Does the Mass Airflow Sensor Do?
How How often does the mass airflow sensor need to be replaced? Mass airflow sensors (MAF) have no expiration date. They are not included on the manufacturer’s scheduled maintenance list of things to replace based on mileage, like spark plugs...
A Buyer’s Guide to the 2012 Kia Optima
Kia Kia hasn’t always had the best reputation. In fact, for years the Korean automaker was known for making cheap vehicles that didn’t last. Today, though, that reputation has drastically changed, thanks in large part to the 2012 Kia Optima....
How to Buy a Good Quality Power Brake Booster
When When you apply your brakes, you’ll feel a pressure – and that feeling is the brake booster doing its job. If you’re not feeling that extra little bit of pressure when you apply your brakes, it’s a good bet...

Service engine light came on.

Hello, this code represents a slow acting thermostat getting to engine operating temperature which is about 195 degrees. The computer monitors the time to get to operating temperature, if it takes too long it will set this code. The...

P2002 DTC Particulate Trap Efficiency Below Threshold

Hi there. The P2002 could be solved by checking the following conditions: Driving too slow or idling the engine too long will cause this code. It takes heat in the 932 F to 1112 F range to burn off the...

No compression cylinder 1, car shakes/vibrates and runs rough, decreased gas mileage.

Yes, absolutely, rebuild or replace the engine. The vehicle itself is a recent model year so your least cost option will be to repair what you have. And, you're right, "re-sale value" is irrelevant in the calculation (good for you!)....

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