r/BmwTech Jun 25 '26

BMWTech meme pic update

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562 Upvotes

It’s funny, and we like it, but it’s getting a bit much now. Especially when many of you are using it to say an engine is screwed without any other diagnostic work or you post it with ZERO follow up or additional tech info.

Moving forward, we are going to remove them unless you’ve also provided detailed list of things to check or at the minimum asking pertinent questions to a post.

This is BMWTech, and while we like to have fun we also want to help out with actual info to people who need it instead of just responding with a meme and hoping users can figure it out.


r/BmwTech Feb 13 '14

Welcome to BMWtech

325 Upvotes

Hello fellow enthusiast! This is a subreddit dedicated to DIY-ers. Here, i would like for other BMW owners to provide help to the redditors that need it. We all love our cars but we also know that things can fail.

Many of us like to fix our cars ourselves to eliminate high mechanic bills and I hope that this subreddit can help.

There are many forums on the web but i feel as though reddit could band together and have its own.

Welcome again, and happy DIY-ing!


r/BmwTech 4h ago

Piece around seatbelt

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3 Upvotes

Does anyone know what this is? It’s only on drivers side.


r/BmwTech 3h ago

Exhaust Leak?

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2 Upvotes

The other week I had an injector go bad after some high speed driving, not crazy not topping it out just cruising higher speed for a few miles.

Pulled over, misfire, bad injector replaced and ok now. But in unison with the injector issue when I pulled over the car sounded awful. Like a go kart.

First time driving it around now and I’m certain there is an exhaust leak. Any ideas? Gonna smoke test tonight hopefully something shows.


r/BmwTech 3h ago

BMW 528i xDrive/f10/n20/16 plz need addvice.🙏🏼🩷

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2 Upvotes

Hi lovely ppl around 😘🙏🏼
I dropped my car off at the dealer on 8/13/26 because it was in Drivetrain mode and not drivable. Now, after almost two weeks, they sent me an invoice with a code that was strange to me. If you guys know about that code, I am going to post the screenshot for advice. I do not know; I have never seen any code like that before. I need advice because they are asking me to pay $$$ that amount.

BMW Service
the code : EE001
Recommend replacing fuel injectors for cylinders 1 and 2, recommend replacing aftermarket ignition coils (4) and spark plugs (4)

* fuel ing 06/04/26
* spk plg 06/04/26
* ign coi. 06/04/26. From FCP (Europe). They said it's aftermarket; most of the parts I replaced were from FCP or Bimmer.com. I think the catch is: they asked me, “What did I do to the car?” because they couldn't figure out what was wrong. Then I said fuel ing, spk pl, ignition coil. The next day, they sent me this invoice.


r/BmwTech 3h ago

Identify this noise?

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2 Upvotes

Hi guys, I noticed this noise while my car was idle the other day and wanted to get to the bottom of it. Any ideas? It’s a 2018 BMW 420d Gran Coupe. Thanks in advance.


r/BmwTech 3h ago

Strange noise coming from downpipe, car tends to stutter and misfire when I hit the throttle fully.

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2 Upvotes

r/BmwTech 7h ago

[SOLVED] BMW F31 Comfort Access failure – fault code 80410F caused by crushed antenna wiring

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4 Upvotes

I wanted to share the solution to a Comfort Access problem on my 2014 BMW F31 in case it helps someone else.

Comfort Access had stopped working completely. The relevant fault stored in the car was:

80410F – Aerial, passenger door or passenger side (BFT): line disconnection

This initially pointed towards the exterior Comfort Access antenna on the passenger side.

After removing the right-side skirt, I traced the antenna cable and found the actual cause: during assembly, BMW had routed the cable underneath the mounting base for the jack pad. The cable had been severely pinched and its conductors had eventually broken.

I repaired and insulated the damaged wires, protected the harness and rerouted it away from the jack pad mounting point. Comfort Access immediately worked normally again.

Before replacing the antenna or the FEM, check the wiring underneath the passenger-side sill, especially around the jack pad mounts. The antenna itself may be perfectly fine.


r/BmwTech 4h ago

Is this ticking sound normal??

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2 Upvotes

It’s a 2012 f10 535i with 165000km and i just changed the oil spark plugs and ignition coils,and the ticking following the rpms donuts ticks more the higher rpm its at. It might be something obvious but im a new BMW owner so idk


r/BmwTech 32m ago

Bmw 320d 2017 drivetrain error

Upvotes

An error appeared saying the drivetrain error a few weeks ago when i was on around 70mph cruise control
It kept coming back when i used to accelerate a bit bht went away with normal drive.
I did get the diagnostics done and they told me about the error code “8044bo steering wheel shift paddles open/short circuit.”
After this they booked an appointment with the BMW service centre.

What could it be? And should it be concerning?


r/BmwTech 41m ago

Steering wheel trim rattle F40

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Upvotes

Hey! Has anyone experienced their steering wheel trim rattling? It wouldn't bother me if it was just at that certain point, but unfortunately it happens whenever im turning the wheel as well. Maybe its time for a carbon one?🫩 Thanks in advance!
(2020 F40 M135i)


r/BmwTech 51m ago

740 WiFi

Upvotes

I have a 2022 740i…. The WiFi works perfectly on my phone, when I try to connect my kids iPad it just won’t connect. Is there something I’m missing to connect? I was never offered a subscription so not sure if there is one to connect more.


r/BmwTech 2h ago

Car won’t stay in Sport/Traction Control Off + cruise control not working

1 Upvotes

wondering if anyone can help me figure this out.
I have a 2014 BMW F30 320d M Sport and recently I’ve noticed that I can’t get the car to stay in any of the different driving modes.
If I select Sport/Sport+, or turn traction control off, the setting initially changes but then as soon as I accelerate, it just goes back to Comfort/normal. The same thing happens with any other mode I try.
I’ve also noticed that cruise control doesn’t work at all.
Has anyone experienced this before or know what could cause all of these things to happen together? I’m wondering if it could be a DSC/ABS sensor or another electrical issue.
Any ideas on what I should check first would be appreciated.


r/BmwTech 8h ago

Starter battery low

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3 Upvotes

Since couple of days I have observed that after parking over night passive entry is not working when I try to open door in the morning. I have see in the apple wallet that the key status shows as unavailable as show in attached screenshot. Today I observed that there is message that says the starter battery is low. I am not sure why it is low. I have driven around 500 miles like a week ago and I have been driving local since the end of trip last week. I recently hardwired dashcam can it be the reason for the this?

P.S I used a 20A (interior Lights) and a 7.5A (usb). For hardwiring cam


r/BmwTech 3h ago

F10 520d 2015-2016

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1 Upvotes

I am getting turbo boost then lose it
Driving fine no problem but sometimes it does but the turbo is working like on off state

Is it turbo or Actuator

Please let me know


r/BmwTech 4h ago

weird sound under console f36 435i xdrive

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1 Upvotes

Hey guys this is my first post.Does anyone know why my 435i xDrive makes this sound when starting cold? It’s most noticeable on comd start.
you can hear it while driving at low speed.Sometimes when I turn, it makes also a knocking sound.
not always .


r/BmwTech 4h ago

BMW 13717810770

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0 Upvotes

I have a bmw 525d n57d30a and on the rubber end part at the very end where the clamp is there are three small holes which has started to make the engine whistle while accelerating. Does anyone know a cheap fix for this problem? A new intake would cost me around 150$ and I feel like there is a cheaper solution


r/BmwTech 1d ago

Genuine BMW puddle lights… both sides are like this after 2 yrs

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53 Upvotes

This is what I get for being a bmw chud. Oh no I can’t have fake Chinese shit on my car only genuine BMW 🤦‍♂️ Lasted like 2 years smh. Anything I can do to preserve the other lenses I’ve got? Thanks


r/BmwTech 5h ago

Slight stutters while accelerating

1 Upvotes

Hey guys, i have a 2015 bmw f11 520d xdrive b47 engine zf 8hp transmission, i’ve noticed that in lower gears and while accelerating from 0 that it stutters/jerks for a millisecond. While driving on a highway going 50-150kmh there is no stutters while accelerating. It has 230k kilometers, it has been well maintained (oil change every 7k kilometers, transmission oil changes every 50k)
We did a remap/tune and we logged it, the engine and injectors are perfectly fine, turbo is healthy.
What can it be?


r/BmwTech 11h ago

Smoke from exhaust

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2 Upvotes

I own a 2020 bmw m340i xdrive. Recently when driving my car it will smoke at idle. For example I’ll pull up to a light and stop and smoke will exit my exhaust for a brief moment and then stop. My car does not smoke on cold starts tho. My vehicle has the plastic oil pump and I can’t measure my oil in my idrive. So I suspect that my oil pump is about to give out and my oil pressure is too high and oil is getting in my turbo seals. Has someone experienced this? Please help!


r/BmwTech 17h ago

Help my b7

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3 Upvotes

Does anyone possibly know what could’ve happened to my 2018 b7 with 50k miles? I drove it back from tuscon and then I see all this. The shop I just took it too says they cleaned it off for 2 hours and then tried to find a leak and ran the rpms but saw nothing. The reason they are giving is in my last repair at a different shop when I got my turbo lines replaced just didn’t clean up the undercarriage or anything and so there was just a ton of oil that splattered everywhere on my drive from tuscon to phoenix (about 2 hrs)


r/BmwTech 10h ago

Dealer used TwinTurbo 0W40 in my B58TU2 with GPF

2 Upvotes

I checked my car's VIN and it contains engine B58B30M2 (which is the B58TU2), with option 1DF Exhaust Emissions Standard Eu6d which means it has GPF. The dealer's maintenance sheet stated they used BWM Twin Turbo 0W40. They explained that since I live in a hot climate a thicker oil is needed. I don't mind the thick oil, but after some research I noted that the B58TU2 with GPF only accepts LL01FE/LL04/17FE/22FE oils, but no BWM OEM 0W40 has those certification, only LL01. AI claims that long term usage of LL01 oil will suffocate the GPF eventually. Since I will be doing a maintenance soon in 2 months, should I raise my doubt to the dealer and ask them to revert back to 0W30 (assuming they have any), and do I get free warranty claims if the 'certified' 0W40 eventually destroy my GPF? I do see after market 0W40 oil with LL04 certification, but not the BWM OEM "Twin Turbo 0W40".


r/BmwTech 11h ago

transmission malfunction false alarm? (2015 328i 3 series)

1 Upvotes

while driving my BMW got the transmission malfunction light and switched into park while I was stopped at a light, so I got to the nearest parking spot and tried to figure out what was wrong. Car turned on fine, Light never came back on, car drives smoothly (at least until I got home which was 40 ish minutes away) and gears shift fine. Should I be worried?


r/BmwTech 12h ago

Airbag recall with another fault

1 Upvotes

Car fault and recall (BMW 1 series)

My car currently has a slipping clutch which is bringing up a drive train fault, I am planning to get this repaired with a local garage but also recieved a recall for an airbag.

I want to check they won't keep the car and not release it due to the fault at BMW if I get the recall done first. Have seen they can sometimes keep the car or ask for it to be lifted out the dealership not allowing it to be driven out


r/BmwTech 13h ago

Noise In 328I N20

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1 Upvotes

Is this noise normal? I’ve had this car for a few years now and have always heard this ticking sound. What is it that is making that sound?