Can BMW service save me money?

Yes. Servicing the drivetrain system can help you avoid more significant repairs. A bad drivetrain can put more stress on other vehicle components.

How do I know if my BMW drivetrain is damaged?

Noises toward the back of your BMW 840i, leaking fluid, trouble turning — these could all be signs of drivetrain damage you want to address. Take action before something more severe happens.

How often should I come in for BMW 840i differential service?

Double check your owner’s manual and talk with a technician. Differential service frequency varies from car to car. At a minimum, we recommend getting your differential inspected and the differential fluid changed as a part of your regular vehicle maintenance routine since your vehicle cannot function without a differential.

Why is my 840i malfunction indicator light (MIL) on?

A multitude of problems can activate your 840i’s malfunction indicator light (better known as the check engine light), including issues with the engine, transmission, sensors, electrical system, or connectors.

Can you reset your 840i’s malfunction warning light at home?

While it’s sometimes possible to clear a malfunction warning light at home, it’s never recommended. If your 840i’s check engine light comes on, it’s usually because there is a problem in one of the vehicle’s systems. You should find and address the underlying issue to help keep your vehicle in great shape. By simply resetting the check engine light, you may temporarily get rid of the light, but the underlying problem is still there. It will only be a matter of time before the light comes back.

Is a drivetrain malfunction in my 840i serious?

Don't ignore a drivetrain malfunction in your 840i. As soon as you notice a problem, have it checked by a professional mechanic to diagnose the issue and carry out any necessary repairs. Driving with a faulty drivetrain is risky and may further damage your 840i.

Is my 840i’s transmission part of the drivetrain?

The transmission is a crucial part of your drivetrain system. The drivetrain in your 840i is responsible for transferring power from the engine to the wheels to move the vehicle forward. This system consists of several components, including the transmission, driveshaft, differential, and axles.

2021 BMW 840i Drivetrain Service

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2021 BMW 840i Drivetrain Service

Your 840i’s drivetrain has a very important job. It transmits power from the engine to the wheels. It spans the full length of your BMW, from back to front. It's one of the most complex systems in your 840i and is made up of everything after the engine transmission: axles, wheels, driveshafts, differentials, and joints. When you tune into you 2021 BMW 840i drivetrain, you help maintain your vehicle’s overall power. You can help prevent repairs by checking and changing differential fluids, and lubricating bearings and gears according to BMW's recommendations.

What Are BMW 840i Drivetrain Repairs

Drivetrains for front, rear, and all-wheel-drive and 4WD vehicles are quite different, so you don't want to go to just anyone for drivetrain repair. You want to come see the technicians at Firestone Complete Auto Care. We can fix many 2021 BMW 840i drivetrain components including the driveshaft, CV axles, and CV joints. Your 840i might need driveshaft repair if you notice vibration as your vehicle accelerates, clunks when shifting, heavy vibrations in your floorboards, or resistance when turning. It's hard to put a timeframe on drivetrain repair. The system's pieces and parts don't necessarily have a "shelf life." A lot depends on your driving style and climate. That’s one reason it’s a wise idea to visit Firestone Complete Auto Care at the first sign your BMW 840i doesn’t drive like it used to.

You might be wondering: how much will it cost to fix the drivetrain in your 2021 BMW 840i? Some smaller differential fixes, like seal or gasket replacement, are usually pretty affordable. Major repairs, like gear or bearing replacement, can sometimes be more expensive since they’re more labor intensive.

BMW 840i Drivetrain Q&A

Drivetrain problems mean driving problems. Get answers to common drivetrain questions and visit your local Firestone Complete Auto Care for drivetrain help.

Can BMW service save me money? Yes. Servicing the drivetrain system can help you avoid more significant repairs. A bad drivetrain can put more stress on other vehicle components.
How do I know if my BMW drivetrain is damaged? Noises toward the back of your BMW 840i, leaking fluid, trouble turning — these could all be signs of drivetrain damage you want to address. Take action before something more severe happens.
How often should I come in for BMW 840i differential service? Double check your owner’s manual and talk with a technician. Differential service frequency varies from car to car. At a minimum, we recommend getting your differential inspected and the differential fluid changed as a part of your regular vehicle maintenance routine since your vehicle cannot function without a differential.
Why is my 840i malfunction indicator light (MIL) on? A multitude of problems can activate your 840i’s malfunction indicator light (better known as the check engine light), including issues with the engine, transmission, sensors, electrical system, or connectors.
Can you reset your 840i’s malfunction warning light at home? While it’s sometimes possible to clear a malfunction warning light at home, it’s never recommended. If your 840i’s check engine light comes on, it’s usually because there is a problem in one of the vehicle’s systems. You should find and address the underlying issue to help keep your vehicle in great shape. By simply resetting the check engine light, you may temporarily get rid of the light, but the underlying problem is still there. It will only be a matter of time before the light comes back.
Is a drivetrain malfunction in my 840i serious? Don't ignore a drivetrain malfunction in your 840i. As soon as you notice a problem, have it checked by a professional mechanic to diagnose the issue and carry out any necessary repairs. Driving with a faulty drivetrain is risky and may further damage your 840i.
Is my 840i’s transmission part of the drivetrain? The transmission is a crucial part of your drivetrain system. The drivetrain in your 840i is responsible for transferring power from the engine to the wheels to move the vehicle forward. This system consists of several components, including the transmission, driveshaft, differential, and axles.

2021 BMW 840i Repair

Nothing lasts forever. Even your BMW 840i's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2021 BMW 840i repairs.