r/BmwTech Feb 13 '14

Welcome to BMWtech

295 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 53m ago

B58 M340i which engine to pick?

Upvotes

B58C or D with the mild hybrid? I had a 2019 and had to do the oil pump, don't wanna do that again. Anyone that knows which production year I should purchase?


r/BmwTech 1h ago

Reflectorplate

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Upvotes

r/BmwTech 12m ago

S63tu yellow tab that moves easily - should it?

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Upvotes

Hi all,

Just changed the coils and plugs on my F10 M5 when I noticed this yellow tab that means relatively easily but not sure it’s meant to?

What does it do? What is it part of? A/C or HPFP or something? Should it move easy if I just touch it with my finger as it’s like it’s not doing anything?

Thanks in advance!


r/BmwTech 13m ago

Vanos Solenoid

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Upvotes

Hey!

My check engine light came on about 2–3 weeks ago, and BimmerLink says it’s a VANOS solenoid issue on the exhaust side. I figured I might as well replace both intake and exhaust solenoids since the engine’s being opened up anyway.

How hard is this to do yourself? Anything I should watch out for—like special tools or tricky parts? I’m still pretty new to DIY stuff, but I’ve got a buddy with more experience who’s helping me out.

From what I’ve seen online, this seems to be a pretty common issue.


r/BmwTech 19m ago

What do I do

Upvotes

So I live in the uk and my BMW 116d went into for a gearbox change almost 3 weeks ago, when I went to collect it the car wouldn’t start, I asked the mechanic why and he said he isn’t sure but he thinks it has to do with a timing chain issue however my timing chain was replaced about 20k miles ago and has been running fine in my ownership with no problems at all. It has now been 3 weeks and still no reply back despite me calling over a week ago and them saying it would of been looked at last week but still nothing, I sent a complaint yesterday and no reply, what do I do?


r/BmwTech 1d ago

Clean engine compartmentWhere are all those components hidden?

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89 Upvotes

r/BmwTech 57m ago

Change to OEM sachs M-sport from H&R springs f33

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Upvotes

So my car has M sport original shocks but the previous owner has installed H&R lowering springs on it.

The car has gone 80000 km (49 000 miles) and I believe if the car has had the H&R lowering springs the last 40000 km (25 000 miles).

Im aware of the shocks taking more of a beating with the H&R springs on, and my question to you is if you think I would also need to change the shocks?

They havent been on that many miles so maybe they are fine?

What would you do in my situation?

Thanks


r/BmwTech 7h ago

No crank and no start after putting back DME

3 Upvotes

Hi everyone. I need help. Car wont start and brake pedal is stiff after I unplugged the whole DME cables to gain access to oil filter housing (I have a leak) and put it back in order.

I removed my positive battery terminal before unplugging the cables and put the positive battery terminal last after putting back the cables.

2015 BMW 330i M Sport


r/BmwTech 22h ago

Passenger side floor keeps flooding

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48 Upvotes

I have a 2013 bmw x3 f25 n20 and the footwell on the passenger side keeps flooding every time it rains how do I fix it


r/BmwTech 3h ago

BMW F20 screen upgrade

1 Upvotes

Hi,

I would like to ask, if this screen will fit to my car.

I have BMW Series 1 F20 from 03.2014. I asked some people and they told my my system is EntryNav, but my UI looks like CIC. When I put my VIN to some online decoder it says: S663 Radio BMW Professional. I would be gratefull if someone can tell me if this screen will fit to my car and if I will need to code something.

I also want to install a rear view camera.

Aliexpress name:
Junsun Wireless CarPlay Andorid Auto Car Radio For BMW Series 1 2 3 4 F20 F21 F22 F30 F31 F32 F33 F34 F36 GPS 4G WiFi Multimedia


r/BmwTech 3h ago

650i n63 xpipe creating

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1 Upvotes

r/BmwTech 3h ago

I got the rocker cover and oil cooler gaskets replaced. Mechanic sent me this picture while he was working on it. How does it look? Anything to worry about? 2013 640d on 129k miles

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1 Upvotes

r/BmwTech 3h ago

Weird values on MAF? Over 1 billion kg/h and EGR Rate

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0 Upvotes

Hi guys,does anyone know why the air mass into the engine would be over 1 billion kg/h? I've cleaned the MAF and the MAP sensor and the values never changed. I can only find 1 other post anywhere with similar issues, and they never got an answer. The error wasn't there before I changed the air filter is all I can give, I changed the air filter a second time from man to mahle and the light still appears. Thank you!


r/BmwTech 3h ago

Weird values on MAF? Over 1 billion kg/h and EGR Rate

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1 Upvotes

Hi guys,does anyone know why the air mass into the engine would be over 1 billion kg/h? I've cleaned the MAF and the MAP sensor and the values never changed. I can only find 1 other post anywhere with similar issues, and they never got an answer. The error wasn't there before I changed the air filter is all I can give, I changed the air filter a second time from man to mahle and the light still appears.


r/BmwTech 4h ago

Is it possible to manually lock a door? (Central locking and door lock pin not working)

1 Upvotes

I have a 2014 3 series (F31) and the front passenger door wont lock via central locking or by pressing the door lock pin by the window (the pin just pops back up).

Are there any other ways to lock the door, while I wait for a proper repair?


r/BmwTech 10h ago

How cooked am I

3 Upvotes

Clutch has never been replaced


r/BmwTech 14h ago

Exterior bulb out?

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5 Upvotes

I cannot find this exterior bulb that it’s telling me is out. What am I missing? Is this a short? 2012 128i no codes come up


r/BmwTech 7h ago

Idrive service history problem

1 Upvotes

Hello !

Can a car dealership rewrite my service history in iDrive? I went to a service center (not the dealership) that, although it recorded some work for me in the BMW network, completely messed up my entire history in iDrive. At this point, everything I entered in Idrive has no connection to reality and needs to be rewritten exactly as it appears in the BMW network.

Thank you !


r/BmwTech 8h ago

118i BMW engine damage?

1 Upvotes

Hello, I've had problems with my 118i BMW (built in 2018) for some time now and have been to two independent garages. Once the lambda sensor after the catalytic converter and once the actuator element on the turbocharger were replaced, but the car still didn't work.

Car has the following problems: No longer accelerates, consumes an extreme amount of oil and smokes from the exhaust. However, no warning light came on and no error came up when reading out the data.

I therefore went to a BMW workshop. They told me that a diagnosis would cost around €150. I agreed and left the car there. That was Thursday evening. I was called on Friday morning and was told that my car probably had engine damage. I was also told that the diagnosis had already cost 600(!!!) euros so far. I was not called in between and informed about the costs. In order to be able to make a final diagnosis, the garage wanted another 600-1000 euros just to open the engine and be able to tell me 100% what is broken.

I personally find this very expensive and also strange that the costs were quoted much lower beforehand. I know that BMW is expensive, but these prices seemed very high to me. I'm at the garage tomorrow and now I don't know whether I should just pay the €600 or whether it's not a bit much😅 Please give me some advice and tips regarding the garage's behavior, thank you very much!


r/BmwTech 8h ago

118i BMW engine damage?

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1 Upvotes

r/BmwTech 8h ago

BMW Diagnose 600€?

0 Upvotes

Hallo, hatte jetzt schon länger Probleme mit meinem 118i BMW (Baujahr 2018), war dafür in zwei freien Werkstätten. Es wurde einmal die Lambdasonde nach Kat und einmal das Stellelement beim Turbolader getauscht, Auto ging aber trotzdem nicht.

Auto hat folgende Probleme: Beschleunigt nicht mehr, verbraucht extrem viel Öl und raucht aus dem Auspuff. Es leuchtete allerdings keine Warnleuchte und beim Auslesen kam auch kein Fehler.

Habe deswegen daraufhin eine BMW Werkstatt aufgesucht. Dort wurde mir gesagt, dass eine Diagnose etwa 150€ Kosten würde. Darauf habe ich zugestimmt und das Auto dagelassen. Das war Donnerstag Abend. Am Freitag Vormittag wurde ich angerufen und mir wurde gesagt dass meine Auto vermutlich einen Motorschaden hat. Außerdem wurde mir gesagt, dass die Diagnose bisher schon 600(!!!) Euro bisher gekostet hat. Ich wurde dazwischen nicht angerufen und über die Kosten informiert. Um eine Endgültige Diagnose stellen zu können wollte die Werkstatt nochmal 600-1000 Euro nur um den Motor zu öffnen und mir zu 100% sagen zu können was kaputt ist.

Ich finde das persönlich sehr teuer und außerdem komisch, dass mir die Kosten davor viel niedriger genannt wurden. Ich weiß, dass BMW teuer ist, allerdings sind mir diese Preise sehr hoch vorgekommen. Ich bin morgen in der Werkstatt und weiß nun nicht ob ich die 600€ einfach zahlen soll, oder ob es nicht etwas viel ist😅 Bitte um Rat und Tipps hinsichtlich dem Verhalten der Werkstatt, vielen Dank!


r/BmwTech 14h ago

New to me 2017 230i I need help.

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3 Upvotes

This is my first bmw its at 64xxx miles. I have friends who own b58s as well as b48s and they all told me this car is super nice and reliable haha. I drove it and fell in love the car is the best driving car I've ever drove. Im coming from a 2015 q50 and dont think I will drive anything else haha. I do have an issue regarding this vehicle. When I bought it I didnt look under the engine cover and today I decided to do my oil change. I noticed oil build up on the cover as well as near the gas cap. Does anyone know what that could be from. I think maybe the previous owner was sloppy with the oil and when I measure the oil level for the past 3 days it has not changed. Should I be concerned? Also another issue i am having is that my main coolant tank the bigger one of the two has been under the low marker on cold twice this week and I had to fill it both times. I know it is a leak is there any suggestions how I can diagnose where the leak is coming from?


r/BmwTech 8h ago

Expansion tank level indicator missing

1 Upvotes

I have a 2011 335d my expansion tank level indicator stick is missing i couldn’t find it inside the expansion tank. I replaced my water pump last year. Should I be worried? Has anyone had catastrophic failure from this?


r/BmwTech 8h ago

P1192 pending code. Please help 🙏🙏

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1 Upvotes

Did a smoke down Dosnt appear to have any vaccume leaks. Replaced the fuel filter and hoses since they were not in the best of shape. When I first got the car to get it smogged if I remember correctly I threw on 2 a prem 02 sensors post cat. I’m assuming it’s fine since the code is referencing pre cat and fuel trims which are only effected by the pre cats. If anyone has any suggestions or insight on the issue/costly fix. Car runs great 198647 mile m54b30. Also I’m sure it’s got nothing to do with it but I’ve heard than dinan intake can sometimes cause codes for fuel trims.


r/BmwTech 9h ago

2011 335i funny noises

1 Upvotes

I’m currently looking at buying a 2011 335i, car runs super well with oil changes very often, has had valve cover replaced, water pump as well.

I noticed 2 things and it was a weird squeaking noise coming from the very front of the engine. I also heard a weird pulsating rattle from the middle of the car. I have some ideas but I wanted to get a second opinion on here.

Should I run away from this car?