If you have a BMW that has transmission malfunction, drivetrain malfunction warning, loss of power, slipping transmission, and hard time starting the car or the car does not want to start in this video we will explain what often can cause that on BMW. We were driving when all at sudden I got transmission light and transmission malfunction, drivetrain malfunction, the transmission started acting funny and the car lost power. When I stopped and turned the car off I had a hard time starting the engine. The BMW cranked for a long time and finally started but it did not run right. If you have this problem we will explain what often causes that on BMW.

► BMW Intake Manifold Removal:
► How to Disconnect A Car Battery:

► Crankshaft Position Sensor N52 Engine (check fitment):
► Crankshaft Position Sensor V8 Engine (check fitment):
► Reverse Torx Socket Set:
► Torx Socket Set:
► Mechanic Tool Set:
► Scanner That We Use:

► Check out our Amazon Store for the tools and parts that we use:

► Our Website:

► Our Baby Girl Channel:
► Our Second Car Channel:
► Honest Product Review Channel:
► GoFundMe Link:

Our Most Popular Videos:
► Bumper Repair:
► Missing Wheel Lock:
► Bearing Replacement:
► Restore Headlights:

♦♦♦ Cameras & Gear Used For This Video ♦♦♦

Panasonic Lumix FZ300:

Polaroid 72-inch:

Polaroid Pro Video Condenser:

NEEWER 160 LED CN-160 Dimmable:

•Comuter for editing
Lenovo ideapad 310:

♦♦♦ Other Equipment and Gear that I use ♦♦♦

Sony HD Video Recording HDRCX405:

•GoPro HERO5 Black:

•Extra Computer For Editing
Lenovo Ideapad 510:

► Like Us on FACEBOOK:

► LIKE & SUBSCRIBE for MORE DIY VIDEOS that could SAVE YOU BIG $$$$$$$ !!!

This is not a sponsored video. Everything is purchased by us!

The video is meant for entertainment purposes only. Do not Attempt!

Auto Repair Guys is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

We, Auto Repair Guys, are not responsible for property damage or injury incurred as a result of any of the information contained in this video. Information given in this video does not guarantee the desired outcome. Any injury, damage or loss that may result from improper use of the tools, equipment, or the information contained in this video is the sole responsibility of the user and not Auto Repair Guys.


Hey, guys, welcome back to auto repair guys.

Thank you guys for watching and subscribing to the channel today will be super helpful.

Video, guys for any of you having a bmw guys.

Now, very nice, stressful situation, let's say, you were driving down the highway, or you always said that guys get a transmission light or a malfunction on the idrive screen that says problem with the transmission, your car rpm start dropping up and down you're losing power guys.

And your car may even die.

And you have a hard time.


It guys, it takes forever.

And you don't have enough power.

Stay with us.

Guys we'll explain what two simple reasons can act like you have a bad transmission on bmw.


It could be any bmw.

Why simply? Because as you know, bmw, the same engine that have been used in that 3 series, for instance, you can find in bmw, 1 series, 3 series 5 series in europe, 6, 7 series here in the us.

X1 x3, x5, multiple bmws, guys.

So now we have a problem here, guys where okay, our car.

Okay, transmission.

Light is on.

It says, okay.

Take it to a shop car is not running correctly takes forever to start and we'll explain guys the most common reason we see here at the shop when working on bmws and how to fix that let me explain to you guys.

But before we start, okay, let me introduce you to the channel quick every single car.

We get at the shop we make at least two to three hundred repair videos.

Specifically on bmws.

We make even more guys why we do all that simple.

Our mission in the shop is to save you guys as much money as we can all.

We need in return subscribe to the channel.

And like the video guys now we'll demonstrate on six cylinder engine.

But even if you have a force in there, eight cylinder, gasoline, diesel, okay, all of them could be the same.

You will notice your engine.

Light may be on guys transmission line will be on.

If you scan the system, depending on the scanners, you may get any of these codes.

What that means guys? Okay, most likely you will have this code for sure to e94.

Now if you're using a cheaper scanner that could be a generic code, but it will be related to crankshaft position sensor guys.

And this is okay that sensor on the six cylinder engine is located under the intake manifold.

If you have a different engine, four cylinders probably it's there as well v8 could differ a little bit, but you need to locate your crankshaft position sensor.

And you know, in our case and most bmws, okay will be located under your engine.

Starter guys.

Okay, right here.

So that's where the crankshaft position sensor is located.

Now number one guys goes for your car to act that way, it's a wire that's, not plugged all the way in, or if you worked on your vehicle and you yanked it out guys, okay, check it out now.


And that wire okay is loose.

You hit a bump or something it's, not going to communicate.

Well as a result, your crankshaft position sensor will not working will not be working your transmission will not be getting data from the crankshaft position sensor, and that could be catastrophic guys.

So as you can see that's the sensor there, check the wiring, harness make sure it's not broken somewhere make sure it's plugged all the way in if that's not the case guys, it could be a bad carrying shaft position sensor.

It has the same results.

And the socket that we need in most cases on bmw, it's reverse, torques, okay, especially on generation, 2005 and up and we'll.

Remove just one bolt.

But I forgot to mention always clean around the crankshaft position sensor, because if you have dust and dirt when you remove that sensor, it will enter that dust will enter in your engine.

And you don't want to have dust in your oil pan, guys because you can severely damage your engine that sensor may be stuck really bad.

Because there is one o-ring there that prevents oil from coming out.

And you may need to even use guys.

Okay, you may need to even use a screwdriver to pry it out.

This is the bolt came out now we're working on the sensor.

So if you guys have these problems, it could be very possible that you have a bad sensor.

And in our case, guys, okay, we showed you what needs to be done.

Okay to fix that problem.

Let me just focus on the sensor here, quick I'm, trying to focus, but it's having a little bit of a hard time to focus.


Perfect, right there.

This is the crankshaft position sensor guys, that's what it looks like, okay and that's that device.

Okay, that can cause all that trouble, because of that little bitty thing now, uh, hopefully that will save your problem to uh will solve your problem.

Guys, we'll have a video that explains how to test test crankshaft position sensors as well.

Thank you guys for watching please subscribe to channel for more help and see you guys next time.



Turn off the engine and let it sit for 5-10 mins. This will get your car to temporarily reset the drivetrain malfunction error so you can drive back home. After a few minutes restart your car and normally drive back.

Can BMW battery cause drivetrain malfunction? ›

BMW Drivetrain Malfunction Common Causes

As mentioned earlier, one of the most common causes that we see triggering BMW drivetrain malfunction is due to a weak 12-volt battery that may need to be replaced with the second most common being an engine misfire, typically caused by a bad spark plug or ignition coil.

How serious is BMW drivetrain malfunction? ›

This should be taken seriously as if not attended to; it is a malfunction that can lead to expensive repairs. However, a BMW drivetrain malfunction does not automatically result in the car's breakdown, meaning that if action is taken quickly, the issue can usually be resolved without too much inconvenience.

What does it mean when my BMW says transmission malfunction? ›

The “Transmission Malfunction” light will come on when the car suspects there to be a problem with the transmission. Your car will typically put the car into “limp mode” when this light comes on. This “Limp Mode” limits the car in speed in an attempt to save the transmission from further damage.

How serious is a drivetrain malfunction? ›

Without a drivetrain, the power your engine generates has no way of reaching the wheels and thus, your car won't go. As you can imagine, that means drivetrain malfunctions are quite problematic. As with any problem, the sooner you spot a drivetrain malfunction, the better.

What are signs of a bad alternator in a BMW? ›

How To Know If Your BMW Alternator Is Failing
  • Dead Battery. ...
  • Slow Or Malfunctioning Accessories. ...
  • Dashboard Warning Lights. ...
  • Performance Issues. ...
  • Trouble Starting Or Frequent Stalling. ...
  • Growling Or Whining Noises. ...
  • Smell Of Burning Rubber Or Wires. ...
  • Electrical Issues.

What are the symptoms of a weak battery on a BMW? ›

When you are not able to start your car (or as quickly as before) when there is dim lighting or flickering dashboard lights. Or if you hear clicking noises when attempting to start your engine, it is a sign that you likely have a BMW dead battery.

How much power is lost through drivetrain? ›

Experts say that overall drivetrain power loss is approximately 2-3%. Therefore, keeping the math simple, if you applied 200 watts to your pedals, the pedals would see all 200 watts. The hub however would see roughly 194-196 watts.

What causes drivetrain power loss? ›

Within the drivetrain, steady-state power losses occur from the following components: the transmission torque converter (in the case of automatic transmissions), the transmission oil pump, clutch pack drag, one-way clutch drag, seal and bearing drag, gear windage and friction, and final drive losses.

Can low oil cause drivetrain malfunction? ›

Low engine oil level is another cause of the drivetrain malfunction. A transmission fuel leak may be present, fuel injectors may wear out, a clogged catalytic converter, a damaged fuel injector, a blown head gasket, or issues in the fuel pump.

How much does it cost to fix a BMW transmission malfunction? ›

The cost for the service and parts can range from $3,000 to over $7,000. However, you'll need to talk to your mechanic to get an exact estimate.

How do you know if your BMW transmission is going out? ›

If you start to hear whining, humming, or clunking noises under your BMW, it could be a sign of transmission trouble. These noises could stem from the fact that the transmission fluid is breaking down.

How much does it cost to fix a BMW drivetrain? ›

The average cost for a Powertrain Control Module Replacement is between $2,154 and $2,194 but can vary from car to car.

How do I fix my BMW drivetrain malfunction? ›

BMW Drivetrain Malfunction Troubleshooting : Restart engine

Turn off the engine and let it sit for 5-10 mins. This will get your car to temporarily reset the drivetrain malfunction error so you can drive back home. After a few minutes restart your car and normally drive back.

Is there a recall on BMW drivetrain? ›

BMW Recalls 2022 I4 and 2022-2023 Ix

BMW of North America, LLC (BMW) is recalling certain 2022-2023 iX xDrive40, iX xDrive50, iX M60, 2022 i4 eDrive40, and i4 M50 vehicles equipped with hybrid electric powertrains.

How do you know if your drivetrain is damaged? ›

The signs of a damaged drivetrain include:

Vibrations or shudders. Irregular sounds. Any noises from the rear of the vehicle. Turning issues.

What happens when alternator goes out while driving? ›

Once the battery is depleted, the vehicle will die and fail to restart. It is also important to note that if you drive a car with a bad or dead alternator, you run the risk of damaging critical electrical components such as the water pump, power steering, and fuel pump.

How do I know if my alternator is dying? ›

7 Signs of a Failing Alternator
  1. Dim or Overly Bright Lights. ...
  2. Dead Battery. ...
  3. Slow or Malfunctioning Accessories. ...
  4. Trouble Starting or Frequent Stalling. ...
  5. Growling or Whining Noises. ...
  6. Smell of Burning Rubber or Wires. ...
  7. Battery Warning Light on Dash.
Aug 24, 2020

Will a car start with a bad alternator? ›

Signs of a Bad Alternator

Some of the things to look for are no-starting and trouble starting, dimming lights and problems with stereo system output. If your car starts but stalls when you're underway, your battery is probably not being recharged due to a faulty alternator.

Can a bad car battery cause loss of power? ›

Yes, a dead battery will cause your vehicle to function progressively worse until it finally grinds to a halt on the side of the road.

What are signs your battery is getting weak and needs to be replaced? ›

Watch for these five telltale signs of a bad battery so you aren't caught out in the cold!
  • Dim headlights. ...
  • Clicking sound when you turn the key. ...
  • Slow crank. ...
  • Needing to press on the gas pedal to start. ...
  • Backfiring.
Jan 7, 2018

Can a transmission cause loss of power? ›

When your transmission is failing, the most common issue it displays is gear slipping. This causes the engine to lose power, RPMs will often increase, and the engine might smell bad.

Is it bad to drive with a drivetrain malfunction? ›

It is better to pull over right after receiving the drivetrain malfunction warning and proceed with the steps above. By continuing to drive the car, you can cause worse damage.

What does loss of engine power feel like? ›

Your engine idles more roughly than usual.

Extremely rough idling could indicate a problem in your spark plugs, cylinders, or fuel filters. No matter the source of your rough idle, any unusual engine sensations are good indicators that your engine is starting to lose power.

Is drivetrain expensive to fix? ›

The cost to fix a drivetrain depends on the type of damage, model, and vehicle's year. Minor repairs like replacing a gasket or seal should cost you anywhere between $100 to $200. However, for major replacements, you will be spending close to $4000.

What does powertrain malfunction reduced power mean? ›

The Powertrain malfunction/reduced power is a warning that is illuminated when the vehicle is experiencing a condition - that if driven can cause damage to the engine, transmission or drivetrain.

Is the drivetrain connected to the transmission? ›

A drivetrain is not actually a solitary part of your car – it's a group of drivetrain parts that collaborate with the engine to move the wheels and various parts of the car to drive it into motion. These parts usually include the transmission, differential, driveshaft, axles, CV joints, and the wheels.

How do you reset a BMW limp mode? ›

Disconnect the battery.

If your car still goes into limp mode, disconnect the battery and wait for about a half hour to reset your car's computer. After a half hour, reconnect your battery and shift gears to see if you are still in limp mode.

What could damage the drivetrain? ›

Engine braking, or shifting gears to reduce your speed, can damage your drivetrain, especially the clutch and transmission. Using your gears to brake when travelling, especially at higher speeds, can shorten the lifespan of your engine, so using your brake pedals lightly is the best practice for this.

Can brakes cause drivetrain malfunction? ›

It is not likely the brakes are causing the Powertrain light to come on unless you have brakes that are grinding metal to metal. This can cause excessive metal to get on the wheels antilock speed sensor and cause erratic or no sensor signal to the computer.

Is transmission malfunction serious? ›

Normally when automatic transmissions have damaged gears they progressively get worse. Summary: This is a more serious problem and time is very important. Be sure to get your car to a qualified automatic transmission specialist soon.

Why does my car keep saying transmission malfunction? ›

A transmission light can turn on for several reasons ranging from an overheating transmission and bad transmission fluid to gear change issues. Checking the transmission fluid level and getting regular transmission service can help prevent car issues. But if a transmission light appears, simply contact RepairSmith.

Is it worth fixing a car with transmission problems? ›

If the price of a new transmission is no more than 40% to 60% of your car's value, then it's probably worth the cost of repair. If your transmission is in good condition, there are benefits to repairing it rather than scrapping it entirely.

How does a car act when the transmission is going out? ›

Typically, when your transmission begins to fail you may start to notice some form of difficulty when changing gears. Occasionally you may hear or feel a clunk noise when you shift gear. Another sign of a rough shifting is difficulty in accelerating to the speed for the gear that it is in.

Will BMW tell you if transmission fluid is low? ›

The dashboard warning light is an indicator to let you know when your BMW's transmission fluid is low or at risk of being critically low. This light alerts you to an issue that could cause damage to your car, so it's important to address any problems with transmission fluid immediately.

What is BMW limp mode? ›

What is Limp Mode? In short, limp mode is your BMW's way of protecting your engine and transmission. When the engine or transmission control unit, called an ABS, detects faulty functioning, the malfunction code is stored in the device and is then assessed to determine the severity of the issue.

What does drivetrain mean for BMW? ›

A drivetrain is not really a single part of your vehicle – it's a group of drivetrain parts that work together with the engine to move the wheels and various parts of the car to propel it into motion. These components often consist of the transmission, differential, driveshaft, axles, CV joints, and the wheels.

Is a drivetrain malfunction covered under warranty? ›

The components of your car's drivetrain can be expensive to repair or replace — especially the transmission. Drivetrain warranty coverage typically includes the transmission, drive shaft, axles, differentials and wheels when they break down.

How long does a drivetrain last on a car? ›

How long should your driveshaft last? Unlike many auto parts, driveshafts don't have a set life expectancy. Most driveshaft problems won't occur until after the 75,000 mile mark. However, it's a good thing to keep your eye on as a damaged or broken driveshaft causes incredibly dangerous driving conditions.

Why does my BMW says drivetrain malfunction? ›

A Drivetrain Malfunction Indication on your BMW can essentially mean that the Engine Control Module (ECM) has detected an issue with the transmission or the engine. It can also mean that the ignition or fuel systems are in trouble.

What is the urgent BMW recall? ›

BMW issued an urgent "Do Not Drive" warning for 90,000 vehicles built between 2000 and 2006, that fall under a recall for defective Takata air bags. The recall affects the 3-series and 5-series, including the M3 and M5, as well as the first-generation X5.

Does BMW fix recalls for free? ›

Open recalls can be fixed for free at any BMW Center. Enter your ZIP code to find one nearby. Can't find what you're looking for? For additional information or assistance, please contact Customer Relations and Services at, or at 1-800-525-7417.

Do you have to pay for a BMW recall? ›

BMW covers the cost of any technical campaigns and safety recalls.

Can a bad battery cause transmission malfunction? ›

This is because a car's transmissions are operated through a computer system, which is powered by the battery. If the battery has corroded and the connections are starting to die, this may not shut the vehicle down, but can instead cause transmission problems off and on.

What can cause a drivetrain malfunction? ›

If the fuel pump fails, it can result in an inconsistent fuel supply. This can trigger a loss in power and the drivetrain malfunction. A fuel pump issue may result from low fuel or from fuel contaminants.

Can bad battery cause BMW to go into limp mode? ›

The computer may have run out of the battery power used to store important information. If this isn't computing correctly, the engine will sense a problem and trigger limp mode.

Is the battery part of the drivetrain? ›

The primary electric drivetrain components for fuel cell vehicles are the same as those for any electric vehicle: traction motors, power electronics, and batteries.

Can a weak battery cause a car not to start? ›

If your vehicle won't start, it's usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you're dealing with a battery or an alternator problem. Here's how to know which one is the culprit.

Can a bad alternator cause transmission shifting issues? ›

If you have a faulty alternator and the vehicle battery gets low on voltage then the computer may not shift the transmission gears correctly and cause other drive symptoms like stalling or surges and rough shifts. Engine and transmission may even go into failure mode and cause various drive symptoms.

Can a bad battery throw a transmission code? ›

A weak battery that may appear to have a good state of charge and crank the engine, but it can cause issues with the vehicle's networks including codes for loss of communication.

How do I get my BMW out of limp mode? ›

Limp mode is meant to give your car just enough power to drive home (or to the nearest repair shop) without causing severe damage to the engine or transmission. You can bypass limp mode by restarting your car, topping off fluids, or resetting the battery.

What would cause a BMW to go into limp mode? ›

Causes of Limp Mode

Faulty engine elements, including sensors and wiring. Excessive or reduced engine boost control. Issues with brake system wiring. Faulty transmission, including ineffective wiring.

What happens when a BMW goes into limp mode? ›

Also known as 'limp home mode', limp mode is a security feature in cars which activates when the engine or transmission control unit picks up a fault. Once it detects a problem, limp mode will cause the less important parts of the car, such as air conditioning, to switch off, and the speed of the car will be reduced.

How do you know if your car is going into limp mode? ›

If you experience a loss of power and see some warning lights on your dashboard, then your car may well have entered into limp mode. It's called this because the car will limit power to protect it from possible damage, while still allowing it to hobble on to your garage or destination.

Is a car starter part of the drivetrain? ›

Is a starter covered under a powertrain warranty? Do not assume the starter, which gets the gasoline engine running, is covered under a powertrain warranty. It might instead be covered under the “electrical” section of a factory warranty, a CPO warranty, or an extended warranty.

Is the drivetrain part of the engine or transmission? ›

A drivetrain is not actually a solitary part of your car – it's a group of drivetrain parts that collaborate with the engine to move the wheels and various parts of the car to drive it into motion. These parts usually include the transmission, differential, driveshaft, axles, CV joints, and the wheels.

Does the drivetrain connect to the transmission? ›

The drivetrain's job begins with the transmission, which controls the power that travels from the engine to the wheels. To get that engine power where it needs to go, the tube-shaped driveshaft connected to the transmission spins rapidly, transferring power to the rear differential.

Top Articles
Latest Posts
Article information

Author: Melvina Ondricka

Last Updated: 15/11/2023

Views: 5281

Rating: 4.8 / 5 (68 voted)

Reviews: 91% of readers found this page helpful

Author information

Name: Melvina Ondricka

Birthday: 2000-12-23

Address: Suite 382 139 Shaniqua Locks, Paulaborough, UT 90498

Phone: +636383657021

Job: Dynamic Government Specialist

Hobby: Kite flying, Watching movies, Knitting, Model building, Reading, Wood carving, Paintball

Introduction: My name is Melvina Ondricka, I am a helpful, fancy, friendly, innocent, outstanding, courageous, thoughtful person who loves writing and wants to share my knowledge and understanding with you.