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Discussion Starter · #1 ·
Hello everyone,

Some days ago I noticed my air conditioning was not only weak but actually almost blowing hot air inside (perfect timing as obviously now it's the season for it)... so I took it in for an inspection to a new BMW repair place here in Berlin (1st time there) and they said the issue is with the water pump and some kind of sensor/PCB handling the temperature management and safety levels. Please forgive me if I am not being too specific with it but neither was the person telling me, there.

Total repair costs, around 2000 Euros.
Now, this has obviously me thinking, as it's an important part of the car (nobody likes to die from heat, in it) but it's also.. quite an expensive repair.

Has anyone ever had anything similar? Am I overly suspicious and should just go for the repairs? I was thinking to take it to another BMW place and have it inspected again just for a different opinion (hopefully BMW is not a hive-mind system that will know to repeat the previous diagnosis just to fool me ;)).

Since this is not 'the engine' or something unique to the car, does it make more sense to take it to 'some repair shop', more trusted or just less generic like a BMW dealer?

As you can read from this, yes: I am not an expert in car repairs, dealerships and 'being an alpha male in not getting fooled'. I apologize in advance if this seems just an amateur post, but this is where I am at.

I am afraid - for reasons I won't go into, now as they are redundant - I am being fooled into a repair that is more expensive than it needs to be. I just heard mixed opinions about 'you should never take it to BMW as they'll rip you off' and 'you should always take it to BMW because they're the ones who know'. So I am thinking this is now also taking a toll.

This said, I love my m140i and I think this was the best car I've ever had, every moment driving it has been really enjoyable and I am super happy.

Thanks for your precious time and help,
 

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Have noticed the same issue myself. BMW dealer just regassed the system for a shocking £200. Made no difference. Going to independent BMW service next week so will get them to look at it. Hope it is not £2000!


2018 M140i shadow edition. Auto adaptive, pronav, HK etc. Bola FLCs.
 

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It may be something like a water pressure temp sensor which is definitely not a 2,000 repair. Your best bet is to have someone read the fault codes on say ista and then read up on the suggested fixes.

if You take it to BMW dealers that’s all they’ll do!.
 

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Discussion Starter · #4 ·
Have noticed the same issue myself. BMW dealer just regassed the system for a shocking £200. Made no difference. Going to independent BMW service next week so will get them to look at it. Hope it is not £2000! - 2018 M140i shadow edition. Auto adaptive, pronav, HK etc. Bola FLCs.
Ah, sorry to hear. Definitely the re-gassing will not make much of a difference if it's a leak or a sensor issue. If you can, please keep this thread up with the updates as it might be useful to future people, in addition to me, of course. I'll do the same! Fingers crossed,

It may be something like a water pressure temp sensor which is definitely not a 2,000 repair. Your best bet is to have someone read the fault codes on say ista and then read up on the suggested fixes. - If you take it to BMW dealers that’s all they’ll do!.
Totally agreed. I am definitely going to go 'third-party' (for lack of better words, to mean "non-BMW dealer") as report back. What I've noticed is that - if it is a day of 30C, for example, and I set it to 22C or something, the A/C seems to work fine and I'd say it's all good. If I put it to MAX A/C, or 18C, it almost starts blowing warm air in. Which could be a safety response of sorts or 'a feature'. But definitely NO fault codes are appearing on my screens, anytime.

Thanks again for the help, people!
 

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Hi, just joined the forum so that I could chip in. My M140i had exactly the same thing with me thinking the aircon needed regassing and was a bit down on power. I took it to my usual garage to get it regassed and they told me they had hooked it up to their regassing machine and that it was showing 25 bar and they gave me the number of a specialist advising me that it would be minimum £1500. I read on the forum that this means they are using the machine reading instead of getting a reading from the obd port which would show the correct pressure.
I decided to get a second opinion and found out that Williams Performance was a BMW specialist within 10 Miles of me. I had also read that the aircon is connected to the chargecooler radiator to help it cool and if you get a hole in the radiator your aircon goes hot. Popped in to see Mark at Williams Performance and he open the chargecooler radiator reservoir and it had no fluid in it. He then poured in some coolant and hey presto it started gushing out from the front of the car. New chargecooler radiator installed and now aircon is back again. I hope this helps you with your issue.
 

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Discussion Starter · #6 ·
Hi, just joined the forum so that I could chip in. My M140i had exactly the same thing with me thinking the aircon needed regassing and was a bit down on power. I took it to my usual garage to get it regassed and they told me they had hooked it up to their regassing machine and that it was showing 25 bar and they gave me the number of a specialist advising me that it would be minimum £1500. I read on the forum that this means they are using the machine reading instead of getting a reading from the obd port which would show the correct pressure.
I decided to get a second opinion and found out that Williams Performance was a BMW specialist within 10 Miles of me. I had also read that the aircon is connected to the chargecooler radiator to help it cool and if you get a hole in the radiator your aircon goes hot. Popped in to see Mark at Williams Performance and he open the chargecooler radiator reservoir and it had no fluid in it. He then poured in some coolant and hey presto it started gushing out from the front of the car. New chargecooler radiator installed and now aircon is back again. I hope this helps you with your issue.
Hi Dadredd,

Thank you from the bottom of my heart for your time. Your input is much appreciated. I will treasure this info and go find a BMW Specialist in my area (I am new here, so a bit of a research will serve me good) so I can use it as a future reference point for all things BMW. And then, for the minimum inevitable, BMW dealers, if inevitable. Emphasis on inevitable :)

Thanks for your time. I'll keep you all up when I have news.
 

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Cool, you will know if your radiator has a leak just open the smaller of the two reservoirs and pour in some coolant and then look for a leak at the front of the car. A new chargecooler rad is about 400euros P.s. The car will not show any errors for this fault either, only the main radiator does so.
 

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Have noticed the same issue myself. BMW dealer just regassed the system for a shocking £200. Made no difference. Going to independent BMW service next week so will get them to look at it. Hope it is not £2000!


2018 M140i shadow edition. Auto adaptive, pronav, HK etc. Bola FLCs.
Just to update on this. Turns out likely Pump failure so new condenser and pump (basically whole aircon setup) and will cost £1600 to fix. Thankfully as I raised the issue whilst still under warranty last year BMW will pay all parts so just £280 bill for me. BMW dealership did diagnostic for free as missed it when I first raised the issue. Took several hours to get to the cause apparently. Anyway hopefully sorted tomorrow. Might have to re look at extended warranties again moving forward.


2018 M140i shadow edition. Auto adaptive, pronav, HK etc. Bola FLCs.
 

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Discussion Starter · #11 ·
Hi Reezo, if you get it sorted and find a decent garage in Berlin, can you post their details so that our other German friends can use the good garage! Cheers, S.
I'd be happy to, unfortunately so far all my searches have not generated anything useful. I am honestly a bit baffled as to how this could happen and I am still thinking I am somehow really picky about suspicious handling of the procedures. I won't go into details but the way things are handled from the start are a bit... off. I'll be happy to update the database once I find something!
 
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