BMW 640i Gran Coupe Car Battery 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

(7)

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

(7)

Car Battery Replacement Service

How much does a Car Battery Replacement cost?

On average, the cost for a BMW 640i Gran Coupe Car Battery Replacement is $390 with $250 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2013 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$655.36Shop/Dealer Price$786.75 - $1166.75
2017 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$773.27 - $1149.92
2014 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$774.69 - $1152.40
2019 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$773.30 - $1149.96
2016 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$777.27 - $1156.91
2015 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$774.94 - $1152.83
2018 BMW 640i Gran CoupeL6-3.0L TurboService typeCar Battery ReplacementEstimate$646.35Shop/Dealer Price$773.31 - $1149.99
Show example BMW 640i Gran Coupe Car Battery Replacement prices

What are car batteries and how do they work?

A car battery is an energy storage device that relies on a chemical reaction within the battery to produce electricity. The stored electrical energy is used to initially operate the starter motor, ignition system, and fuel system on your vehicle. Once your car engine is running, the alternator supplies the electricity needed for all vehicle systems and charges the battery to replace the electric energy used when starting a car.

Most electric vehicles have a traction battery which is in addition to the standard 12 volt battery that is used to start the car engine. Traction batteries also convert chemical energy to supply electrical energy but operate at higher voltages and often are monitored by the PCM (Powertrain Control Module).

Battery

When to replace a car battery?

  • Your car doesn’t start. A new battery has a specified capacity to provide power. This capacity is referred to as the cranking amps rating of the battery. As a battery ages, the actual amps that a battery can supply becomes lower than its original rating Once the cranking amps fall below a critical threshold, it will be difficult or impossible to start your car.
  • Battery or charging system warning light is illuminated. Should a battery or charging system warning light illuminate, a mechanic should perform a few basic tests to determine if a battery replacement is needed.
  • Electrical components don’t work. Once a battery has started to fail, and the voltage produced by the battery drops, then vehicle electrical components can malfunction, such as the security system. If you are experiencing electrical malfunctions, it’s a smart idea to have the battery tested.

How do mechanics replace the battery?

  • A temporary power source might be installed to avoid the possibility of losing radio presets or stored data in the PCM while the battery is out. When the battery is already completely dead, this step is unnecessary.
  • The vehicle’s negative cable is removed from the battery, followed by the positive cable. The battery tie down system is loosened and the old battery removed.
  • Cable ends and wiring are carefully inspected to ensure cleanliness and no corrosion. In some cases, corrosion can be extreme and the cable may need to be replaced or wiring repaired.
  • The new battery is installed and the tie down system is reinstalled. Anti-corrosion compound is applied to the battery terminals. The positive terminal is reconnected followed by the negative terminal.
  • Some vehicles, for example some models of BMW, VW, and Audi, may require PCM programming to input battery parameters. This step, performed using a specialized scan tool, is necessary to maximize battery life and prevent electrical system malfunctions.
  • The car is started and charging system output is measured and compared against the factory OEM specification to ensure that the new battery will properly recharge. Generally, charging output will be in the range of 13.8 to 14.8 volts but the exact specifications vary by make and model.

Is it safe to drive with a battery problem?

Yes, but if you have a weak battery you might be left stranded somewhere if the battery dies completely and you cannot start your car. A faulty battery may also needlessly overload the alternator and could adversely affect the operation of the vehicle’s electrical system, including the vehicle security system and the shift interlock.

When replacing the battery keep in mind:

  • The quality of the electrical connections to the battery posts is important. Connections must be clean, free of corrosion and properly tightened.
  • Batteries store a large amount of energy and if short-circuited a battery could explode and can create intense discharges that can damage your eyesight. Insulated tools should be used to attach cabling to battery terminals. Otherwise, the battery’s positive cable can be shorted to ground or the positive and negative posts can be directly shorted. Batteries can only be safely installed from a positive terminal to positive wiring and from a negative terminal to body ground. If the polarity is reversed damage will likely occur to the vehicle’s electrical system.
  • Generally, a car battery will have a service life of 4 to 7 years. If a load test on a battery reveals a significant reduction in the capacity of the battery to provide power, you should buy a new battery rather than wait for the old battery to fail completely.
  • Batteries should only be disconnected if the engine is off and the alternator is not running. Disconnecting a car battery while the alternator is running can cause a voltage spike that will damage sensitive electronic components in the vehicle, such as the PCM.

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

(7)

Rating Summary
7
0
0
0
0
7
0
0
0
0

Pardeep

22 years of experience
1277 reviews
Pardeep
22 years of experience
BMW 640i Gran Coupe L6-3.0L Turbo - Windshield Washer Pump Replacement (Front) - Sunnyvale, California
Good communication.

Matthew

34 years of experience
1438 reviews
Matthew
34 years of experience
BMW 640i Gran Coupe L6-3.0L Turbo - Oil Filter Housing Gasket - Hampton, Virginia
Matthew not only fixed my vehicle but provided outstanding customer service. He came prepared to do the job and completed the job in a timely manner. I will be requesting him again if I need a mechanic. Thanks!

Elias

15 years of experience
225 reviews
Elias
15 years of experience
BMW 640i Gran Coupe L6-3.0L Turbo - Bleed Brakes - Brooklyn, New York
Very good work fast service reliable was happy with the work that was done to my car

Reginald

38 years of experience
99 reviews
Reginald
38 years of experience
BMW 640i Gran Coupe L6-3.0L Turbo - Pre-purchase Car Inspection - Torrance, California
Reggie was amazing. He was extremely thorough and detail oriented and caught so many things the dealership did not disclose. Would highly recommend!

Excellent Rating

(7)

Rating Summary
7
0
0
0
0
7
0
0
0
0
Number of BMW 640i Gran Coupe services completed
77+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Windshield Wiper Motor
Common signs include wiper blades that move slower than programmed, only have one speed, do not move at all, and don't park in the correct position.
P0237 OBD-II Trouble Code: Turbocharger Boost Sensor A Circuit Low
P0237 code definition Turbocharger Boost Sensor A Circuit Low What the P0237 code means P0237 is an OBD-II generic code that is...
Top Automotive News & Stories: October 1-7
BMW i5 images leak, an ultra-lux Jeep, hydrogen-fueled Colorado ZH2, Fisker's electric future, record plug-in sales, NHTSA Road to Zero, and more.

New Slave cylinder installed and the plunger keeps getting dislocated. Doesn't want to go back into the cylinder and the pedal is soft

Hey there, it sounds as though the hydraulic pressure is not bleeding back fully when you release the pedal. First you should check the clutch pedal and verify that there is free play when the pedal is released. There should...

Is there a voluntary service recall on the 2004 Lincoln Aviator for engine codes p0308/p0316

Hi there. The best way to find voluntary recall information for your vehicle is to click this link (https://www.research.com/recalls/lincoln/aviator-2004) and search based on the state you live. The P0308 trouble code means that the powertrain control module (PCM) has detected...

I changed the throttle body out to fix a rough idle and slow acceleration, and now im still getting a rough idle and engine misfires

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