[igom3]

My noise is gone I hope is for good!

[EMC]

Originally Posted by Thud

Yay, add me to the club!





Starting doing this a couple weeks ago (21k miles on the clock now). This is just after starting up and pulling out of the parking space.

That's exactly what my car has been doing. It's a bit random since sometimes it will scream right away and other times it takes 100 yards or so and turning a corner. When security at my work is directing traffic, the officer will stare then shake his head as the belt is making a screech. He's probably thinking "Should have bought an American car."



Noise doesn't start until 29 seconds into the video. Hard to hear on the video, but it was very loud to everyone else around.

[andys10]

The 335 D engine has two belts: main, serpentine belt (drives alternator, power steering and several idlers + tensioner) (water pump is electric) and the short one, that drives A/C compressor directly from the crankshaft pooley. Replacing the main, serpentine belt tensioner doesn't make any sense-it's unrelated to the A/C compressor. apparently, an "Elasto Belt" is being used to drive the A/C compressor (like a big rubber band, that you stretch to install (using a special tool), and doesn't require tensioner)

[naamanf]

My A/C belt also makes a horrible squeal at start-up, time to take it in.

[adriang]

I drove a diesel golf for a few years, I had a belt squeal because I drove through a 'toronto construction sandstorm'.

It turned out my pulleys had too much dirt in them, cleaned them out and sprayed some wd40. Solved the squeal I had.

(Also my cabin air filter was clogged with dirt too, I just used the vacuum on it temporary fix)

[archaicbark]

Originally Posted by archaicbark

They replaced the belt today. Interestingly they did not give invoice. New belt is front belt, MutiRib 325K-4. Made in Korea. SO far so good.
From what I can find, the new belt is 5mm shorter than stock.

Still no squeal on new belt. That's our solution.
I have a feeling some bearings or compressors will not like having this tighter belt in the long run. Hope that happens under warranty.

[pondo]

My car is now making the same damn noise...56k mile on the clock with a CPO vehicle. Looks like I'll be paying for this one out of pocket or changing it myself.

[Clearmysix]

This happened on my CPO 335d this morning (bought the car last week). The car just surpassed 50k. I wonder if they will replace the belt? Will let you know.

[Timujin]

I test drove a 9000 mile 2011 used d and at start up it had loud belt squeal. Salesman said it's because it hasn't been started in awhile.

[cssnms]

Originally Posted by Timujin

I test drove a 9000 mile 2011 used d and at start up it had loud belt squeal. Salesman said it's because it hasn't been started in awhile.

Tell him he is full shit.

[igom3]

Originally Posted by cssnms

Tell him he is full shit.

Even his eyes are turning brown! LOL

[Clearmysix]

Originally Posted by Clearmysix

This happened on my CPO 335d this morning (bought the car last week). The car just surpassed 50k. I wonder if they will replace the belt? Will let you know.

The dealer here in SD fixed it with the new belt after not being able to replicate and telling me that "they do not fix based on a noise." I'm just glad they did as my car is out of original warranty and service contract. All the best to the rest!

[EMC]

Mine was replaced at the beginning of June. No belt squeal the past two months.

[cssnms]

As I expected as the summer progressed and the hotter and more humid it got the dreaded squeal returned with a vengance! I could not take the embarassment anymore, so I dropped the car off at the dealer this morning and I have the SA the part number listed above and said this is what fixed the problem for other d owners. We shall see....

In the meantime I have a boring boat of an F10 528 w/that aweful stop/start feature to abuse until I get my precious diesel back.

[hotrod2448]

We just had the A/C drive belt replaced due to the squeal as well. Within a week of the first time it did it, it became intolerable.

We had an F30 328 for a loaner. We were so happy to get our d back. I don't think we'll be getting into an F30 anytime soon. Start/Stop is awful, idle is quite rough, steering numb, interior feels cheap, WTF is up with the cup holder lid?, too gadgety for it's own good.

[cssnms]

Originally Posted by hotrod2448

We just had the A/C drive belt replaced due to the squeal as well. Within a week of the first time it did it, it became intolerable.

We had an F30 328 for a loaner. We were so happy to get our d back. I don't think we'll be getting into an F30 anytime soon. Start/Stop is awful, idle is quite rough, steering numb, interior feels cheap, WTF is up with the cup holder lid?, too gadgety for it's own good.

I hear what your saying abotu the interior. The only two things I like better at least in the F10 is the look of the shifter and the navigation's auto night mode feature when it gets dark or when you pull into the garage -- lord knows why our navs in a $40k+ car don't do this, even my cheap $200 Garmin even does it.

[GreekboyD]

Originally Posted by cssnms

As I expected as the summer progressed and the hotter and more humid it got the dreaded squeal returned with a vengance! I could not take the embarassment anymore, so I dropped the car off at the dealer this morning and I have the SA the part number listed above and said this is what fixed the problem for other d owners. We shall see....

In the meantime I have a boring boat of an F10 528 w/that aweful stop/start feature to abuse until I get my precious diesel back.

Did you give him an OEM BMW part number or one for an aftermarket belt?

[cssnms]

Originally Posted by archaicbark

They replaced the belt today. Interestingly they did not give invoice. New belt is front belt, MutiRib 325K-4. Made in Korea. SO far so good.
From what I can find, the new belt is 5mm shorter than stock.

Originally Posted by GreekboyD

Did you give him an OEM BMW part number?

See above -- it's an aftermarket belt.

SA called and said they located the campaign from BMW and will be installing said aftermarket belt.

[GreekboyD]

Thanks! I've yet to experience this "thud" yet but who knows...lol

[cssnms]

As memtioned above, took the car in the 3rd time for dreaded belt squeal. Dealer had it ready to go with the aftermarket Korean belt installed 24 hours later, but asked if they could keep it one more night to make sure there was no issue at start-up the next day - no problem! Picked the car up yesterday and so far so good!

While at the dealer I complained of brake pulsing so the dealer also REPLACED my front rotors and brake pads despite having another 22k mi to go (according to computer) on the existing pads.

I also complained about the mpg decrease since having the emissions recall performed (egr replacement and repgoram) and the SA everything appeared to be operating within in spec, but that they will document the problem and that perhaps BMW will investigate if they receive enough complaints - so for everyone else COMPLAIN if you are seeing similar results since having the EGR work performed. It sucks that I am now getting high teens mpg city.

[cssnms]

Day 2 with the new belt, so far so good boyz! Will report back in 3 months or if it squeals whichever comes first.

[Timujin]

It happend to me for the first time today. It was 106F outside and the car was sitting for hours. I will mention this when she goes in for the first service.