[99Turbo]

Hi everyone,

A few months back, I posted a video with an unusual noise from my new M2. Short version - in higher temperatures, the climate control system fan may make a fairly loud siren-like noise. Generally, above 95F is the range and since I'm in Phoenix, that's about 4 months out of the year.

BMW has taken me on a two month journey. It has ended with: "Yes we hear it. Nothing is out of spec. So there's nothing to do."

Fortunately, this does not appear to affect all vehicles. And, the cooler weather is here. So until next Spring...

My YouTube vent is here: It's supposed to sound like that!

Apart from that, the first 7000 miles have gone well.

[Shadak]

cant listen to the vid properly but i raised a concern about loud fan, or rather, when it needs to really cool down mostly after spirited driving, it would whine for couple of seconds then wind down, higher frequency noise.

They took another m2, simulated 100% fan in both and they both did the same noise so considered by design. In the end, they said there would need to be more complaints for HQ to consider a case for this.

[99Turbo]

Originally Posted by Shadak

cant listen to the vid properly but i raised a concern about loud fan, or rather, when it needs to really cool down mostly after spirited driving, it would whine for couple of seconds then wind down, higher frequency noise.

They took another m2, simulated 100% fan in both and they both did the same noise so considered by design. In the end, they said there would need to be more complaints for HQ to conaider a case for this.

Thanks for the feedback. I’ve done my part to be on the complaint list. My service advisor was sympathetic and all involved acknowledge the sound but no action. Not all M2s do this. At times it drowns out the sound system. Mainly an annoyance that I don’t feel is appropriate for this vehicle.

When my wife, who doesn’t have the best hearing, comments that it sounds like a jet getting ready to take off, that doesn’t make me feel great about the car or the brand.

First world probs, though. 😉

[Searay55555]

Have you ever driven a 335 in Phoenix heat? Sounds similar to mine. That fan gets screaming’.

[99Turbo]

Originally Posted by Searay55555

Have you ever driven a 335 in Phoenix heat? Sounds similar to mine. That fan gets screaming’.

Guess it’s a “feature”. Other M2’s locally haven’t made the noise, but it’s within “parameters”. Guess that’s German/Mexican engineering and US engineering support for the customer is wrong. Reminds me of the old Audi 5000 days, but I digress. 😉

[AZG87]

Originally Posted by 99Turbo

Hi everyone,

A few months back, I posted a video with an unusual noise from my new M2. Short version - in higher temperatures, the climate control system fan may make a fairly loud siren-like noise. Generally, above 95F is the range and since I'm in Phoenix, that's about 4 months out of the year.

BMW has taken me on a two month journey. It has ended with: "Yes we hear it. Nothing is out of spec. So there's nothing to do."

Fortunately, this does not appear to affect all vehicles. And, the cooler weather is here. So until next Spring...

My YouTube vent is here: It's supposed to sound like that!

Apart from that, the first 7000 miles have gone well.

How was it on our hot days in the 1 teens? Did it get progressively worse? Taking delivery soon here in Phoenix too so will be curious come next summer.

[99Turbo]

Originally Posted by AZG87

How was it on our hot days in the 1 teens? Did it get progressively worse? Taking delivery soon here in Phoenix too so will be curious come next summer.

Makes the sound shortly after startup. Ramps up, falls off and maintains a lower volume and frequency drone that can come and go (cycle). It seems to calm down after a while. If you get to a stop and go situation, like a drivethru, it can cycle on and is a little embarrassing as it sounds looking a medium volume siren.
Hopefully it’s not a common trait but rest assured that BMW will not address it since apparently the fan meets engineering parameters. Apparently there is not a sound parameter. But the service folks and engineers hear it. They just say it’s acceptable.

[RockCrusher]

Originally Posted by 99Turbo

Hi everyone,

A few months back, I posted a video with an unusual noise from my new M2. Short version - in higher temperatures, the climate control system fan may make a fairly loud siren-like noise. Generally, above 95F is the range and since I'm in Phoenix, that's about 4 months out of the year.

BMW has taken me on a two month journey. It has ended with: "Yes we hear it. Nothing is out of spec. So there's nothing to do."

Fortunately, this does not appear to affect all vehicles. And, the cooler weather is here. So until next Spring...

My YouTube vent is here: It's supposed to sound like that!

Apart from that, the first 7000 miles have gone well.

Recording under the hood? You're going to gather noise like you won't believe.

High performance engine. Puts out lots of power and generates lots of heat. Needs a high performance cooling system. Even if one isn't making big demands of the engine it still is a big heat generator.

My M2's radiator fan has made some bit of a turbo-fan whine but it is not real loud. I drive with the A/C on the windows up and with a CF roof no sun roof.

It has been kind of rare that I hear the noise mainly because I don't drive the car in the hotted part of the day in real hot weather. But a few times I had the car out in 100F+ just to see how it handled the high temperature. Can't recall the specifics of when the noise occurred but when I heard it I immediately knew what it was and appreciated the fact the engine controller was doing its job to keep engine temperature in check.

Had a bit of time to think about it and I recall one time I heard the noise was shortly after I returned to the car after parking it in the garage for a while. The garage is not insulated, has no ventilation and the car had the garage feeling like an oven. 'course, the car had time to heat soak considerably. I started the engine, got the A/C going, buckled up. Then heard the fan speed up for a bit. Figured it was just dealing with the heat from the car sitting in the hot garage for some time.

[99Turbo]

Originally Posted by RockCrusher

Recording under the hood? You're going to gather noise like you won't believe.

High performance engine. Puts out lots of power and generates lots of heat. Needs a high performance cooling system. Even if one isn't making big demands of the engine it still is a big heat generator.

My M2's radiator fan has made some bit of a turbo-fan whine but it is not real loud. I drive with the A/C on the windows up and with a CF roof no sun roof.

It has been kind of rare that I hear the noise mainly because I don't drive the car in the hotted part of the day in real hot weather. But a few times I had the car out in 100F+ just to see how it handled the high temperature. Can't recall the specifics of when the noise occurred but when I heard it I immediately knew what it was and appreciated the fact the engine controller was doing its job to keep engine temperature in check.

Had a bit of time to think about it and I recall one time I heard the noise was shortly after I returned to the car after parking it in the garage for a while. The garage is not insulated, has no ventilation and the car had the garage feeling like an oven. 'course, the car had time to heat soak considerably. I started the engine, got the A/C going, buckled up. Then heard the fan speed up for a bit. Figured it was just dealing with the heat from the car sitting in the hot garage for some time.

Yeah, I appreciate the cooling systems doing their job. But when the sound is loud enough to affect listening to the stereo and passersby look around to see what’s making that sound, it might be a bit too much. That, and the fact that many of them don’t do this or it’s much more muted.

For now, I’ll enjoy the cooler weather. If It returns and is obnoxious, I guess I’ll look into a replacement fan at my cost since it is within standards.