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      01-08-2013, 01:51 PM   #45
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Originally Posted by ES_TRADER View Post
It might be logged in the ecu already, not sure if it goes in shadow memory but too many drive cycles can clear it. Personally I'm waiting for it to happen consistently before I let them take a swing at my new car. Rather not go in if I don't have to. I've driven the car about 10 times or so since the last fan incident and nothing yet. I wonder if it was a software glitch and maybe reset itself.
It happened to me this morning and one other time a couple months ago. I only have 1400 miles. There was no loud fan noise, but it felt weak accelerating in 2nd and didn't want to go above 3k RPM or so.

Nothing listed in the car's status menu. But wondering if I should take it in anyway as I'm taking a long trip this weekend and don't want this to occur on the highway.

Edit: decided to make an appt. for tomorrow and see if anything was logged.

Last edited by snowghost; 01-08-2013 at 05:23 PM.
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      01-09-2013, 05:13 PM   #46
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Aux Cooling Fan

So I drop the car off today and explain to the SA about the fan perhaps being the culprit. She says she's not heard of this issue and asks another SA about it. He says the same.

I had mentioned it's a "known issue" on the Forums, whereupon she snidely tells me the Forums are a dangerous place.

Well, I just got a call from her and they are ordering a new auxiliary cooling fan as that's what kicked me into Limp Mode. Hmmm, dangerous???
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      01-09-2013, 07:07 PM   #47
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Quote:
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So I drop the car off today and explain to the SA about the fan perhaps being the culprit. She says she's not heard of this issue and asks another SA about it. He says the same.

I had mentioned it's a "known issue" on the Forums, whereupon she snidely tells me the Forums are a dangerous place.

Well, I just got a call from her and they are ordering a new auxiliary cooling fan as that's what kicked me into Limp Mode. Hmmm, dangerous???
So how did they diagnose it? I mentioned it on my ticket and they said nothing was logged, no faults found on short test, etc.
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      01-09-2013, 08:19 PM   #48
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So how did they diagnose it? I mentioned it on my ticket and they said nothing was logged, no faults found on short test, etc.
It must have logged something on the ECU. I can verify when I pick it up tomorrow.
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      01-12-2013, 03:51 AM   #49
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This limp mode happened to me for the first time tonight....car wouldn't rev over 3k rpm and when I stopped had the loud fan noise. I just hit 1000 on the odo. My car is also a 335i msport. Had no error message on the dash or idrive. Happens again and I guess I'll bring it in.
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      01-12-2013, 04:15 AM   #50
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Quote:
Originally Posted by snowghost View Post
It happened to me this morning and one other time a couple months ago. I only have 1400 miles. There was no loud fan noise, but it felt weak accelerating in 2nd and didn't want to go above 3k RPM or so.
Same problem. My radiator fan was out.
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      01-12-2013, 10:54 AM   #51
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are these all 335i with M Sport line?
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      01-12-2013, 12:41 PM   #52
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I have also experienced this issue similarly. I have an August 2012 build 335 m Sport.

The first appearance was a little over a month and a half ago with the loss of power issue. Was on a highway on ramp when it happened, so it kind of put me in danger since i could barely get it up to highway speed. I pulled off at the next exit, checked the vehicle status in the iDrive menu, and noticed how high the fan in the engine area seemed to be running so shut the car off. After a minute it calmed down, so i tried to turn it back on, and it acted like nothing ever happened. There was no check control shown during or after this happened, but it hasnt felt the same since. Pretty much exactly how Cfichman's video depicts:
. I didnt feel any steering wheel vibration as ybbiz34 pointed out though. I did let my SA know about this, but I didnt make much effort to bring it in because as justinnum1 said, i have also found that unless you can bring it in with the problem, its likely a waste of time.

The loss of power happened to me again about 2 weeks ago in a different way, still going on an onramp again though, except this time it didnt really go into "limp mode", it just felt like it had less HP available or something. I didnt hear the loud fan or anything like before, but it was like this little Mazda 3 just zipped around me like my acceleration was weak (not cool). I brought in after that, additionally because I have also been noticing that she just seems to pegging 160 line for the oil temp, even after 15 to 20 miles on the highway. Heat doesnt really blow out the whole time either, even though its on max 84. Sometimes it does get to a little over 200, but that will be after alot of stop and go at traffic lights. I was hoping there would be some codes stored somewhere outside of the vehicle status view we have access to, but unfortunately they couldnt find anything wrong.

Now yesterday while driving home i noticed the Check Engine Light come on. Im like WTF, already?? No power loss or anything like that, just cruising, temp pegged at 160, kind of freezing my behind off on the way home, and this happens. But this could be a good thing because I pulled off and took it to autozone and had it scanned. They found a P0128 code, which apparently points to cooling/thermostat/fan/temperature sensor issues, so same suspected areas everyone has been pointing to. I havent driven it since it happened, but the light is staying on when turning the car on and off, so im going to bring it in again with this proof, and hope to start getting some traction on solving this problem.
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      01-13-2013, 01:50 AM   #53
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are these all 335i with M Sport line?
Most, yes
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      01-13-2013, 01:53 AM   #54
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Quote:
Originally Posted by BimmerBrova View Post
I have also experienced this issue similarly. I have an August 2012 build 335 m Sport.

The first appearance was a little over a month and a half ago with the loss of power issue. Was on a highway on ramp when it happened, so it kind of put me in danger since i could barely get it up to highway speed. I pulled off at the next exit, checked the vehicle status in the iDrive menu, and noticed how high the fan in the engine area seemed to be running so shut the car off. After a minute it calmed down, so i tried to turn it back on, and it acted like nothing ever happened. There was no check control shown during or after this happened, but it hasnt felt the same since. Pretty much exactly how Cfichman's video depicts:
. I didnt feel any steering wheel vibration as ybbiz34 pointed out though. I did let my SA know about this, but I didnt make much effort to bring it in because as justinnum1 said, i have also found that unless you can bring it in with the problem, its likely a waste of time.

The loss of power happened to me again about 2 weeks ago in a different way, still going on an onramp again though, except this time it didnt really go into "limp mode", it just felt like it had less HP available or something. I didnt hear the loud fan or anything like before, but it was like this little Mazda 3 just zipped around me like my acceleration was weak (not cool). I brought in after that, additionally because I have also been noticing that she just seems to pegging 160 line for the oil temp, even after 15 to 20 miles on the highway. Heat doesnt really blow out the whole time either, even though its on max 84. Sometimes it does get to a little over 200, but that will be after alot of stop and go at traffic lights. I was hoping there would be some codes stored somewhere outside of the vehicle status view we have access to, but unfortunately they couldnt find anything wrong.

Now yesterday while driving home i noticed the Check Engine Light come on. Im like WTF, already?? No power loss or anything like that, just cruising, temp pegged at 160, kind of freezing my behind off on the way home, and this happens. But this could be a good thing because I pulled off and took it to autozone and had it scanned. They found a P0128 code, which apparently points to cooling/thermostat/fan/temperature sensor issues, so same suspected areas everyone has been pointing to. I havent driven it since it happened, but the light is staying on when turning the car on and off, so im going to bring it in again with this proof, and hope to start getting some traction on solving this problem.
Just as I suspected. Oil temp pegged to 160 after driving for a long while. Thermostat and or fan issue
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      01-13-2013, 02:23 AM   #55
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are these all 335i with M Sport line?
Most I believe.
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      01-13-2013, 09:42 PM   #56
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My car just doesn't feel the same after that limp mode incident. It feels generally weaker now. Going to bring it in tomorrow for a checkup. I'll let you know how it goes.
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      01-13-2013, 09:46 PM   #57
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Keep us posted.
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      01-14-2013, 11:27 AM   #58
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Just as I suspected. Oil temp pegged to 160 after driving for a long while. Thermostat and or fan issue
One last observation around this....and im not sure if it could just be a precursor to loss of power or what, but I did a bunch of highway driving the last two days to see if I could observe anything since they couldnt work on it until today earliest anyway, and I did notice some strange behavior and wonder if anyone else has, or is willing to try this expiriment. I noticed that if I drive the car with no air on at all, it actually seems to warm up the engine properly. At about 45 degrees outside, and after about 3 or 4 miles, the oil temperature gauge started to move off of 160. After about 10 miles it was at 205 (the halfway to middle point). Then after several more miles until the end of a 50 mile drive it consistently stayed between the 220 and 235 marks.

I then did a second run with the air on (heat, 84 driver and pass), where the oil temp gauge started at 205 (shut it off for 10 min in between). The heat was actually working as i pulled off, nice and warm....but then the strange part was that after about 10 miles, the temp gauge was at 190, and the heat wasnt coming out as warm. Then after about 25 miles the gauge was at 175, and the air was coming out slightly chilly! Its like the engine temp was being robbed by the internal air. It stayed at 175 until the end of the 50 mile drive, and the air never rose above that chillness again. The kicker is that at the end when i was on the streets to go home, if I was at a stop light idling long enough, the heat would start to show signs of life intermittently even though the oil guage still never budged. Go figure.
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      01-16-2013, 04:40 AM   #59
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I brought our M Sport 335 to the shop today for the same issue. No power loss but a low reading temp guage. The service writer did mention a secondary fan on the M Sport 335, but said that the problem could be caused by a number of issues. I have our car scheduled to be checked out next week at our dealer and will report back then. However, we have had no issues since the one isolated incident.

Bob
UPDATE: Our car was brought to our local BMW dealer today to check out our problem. They are keeping it overnight. It has performed flawlessly since I originally posted my problem. Our car now has 1278 miles on it now.

I will post what our dealer finds, if anything, once we get our car back.

BTW, I am new to this forum but not new to BMW. I really appreciate forums such as these to learn and share our experiences about "The Ultimate Driving Machine."

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      01-16-2013, 11:12 AM   #60
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subscribed. lets keep this thread as the main one. i know there are a few out there but everyone please update their dealer findings here.
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      01-16-2013, 12:25 PM   #61
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My car just doesn't feel the same after that limp mode incident. It feels generally weaker now. Going to bring it in tomorrow for a checkup. I'll let you know how it goes.
This is the third day it's been in the shop. I'm starting to get a little worried now... Hope I can update soon.

When I brought it in, I went on a drive with the shop forman and he said they would run some fan diagnostics and it's been a common problem among the new 3 series.

Also, on an unrelated issue. He said someone had come in with a bad rust problem under the passenger seat too. I don't know what they plan to do about it though.
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      01-16-2013, 12:51 PM   #62
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This is the third day it's been in the shop. I'm starting to get a little worried now... Hope I can update soon.

When I brought it in, I went on a drive with the shop forman and he said they would run some fan diagnostics and it's been a common problem among the new 3 series.

Also, on an unrelated issue. He said someone had come in with a bad rust problem under the passenger seat too. I don't know what they plan to do about it though.
Guys contact BMW North America in New Jersey. In my case I was so pissed I emailed BMW Munich, who replied very quickly that the matter would be referred and politely asked that I be patient.

BMWNA has contacted me twice since then, the first time to tell me the seat pans have been ordered. The second time to see if they were installed. They have not arrived yet. I will post the results when they are replaced.
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      01-16-2013, 01:21 PM   #63
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This is the third day it's been in the shop. I'm starting to get a little worried now... Hope I can update soon.

When I brought it in, I went on a drive with the shop forman and he said they would run some fan diagnostics and it's been a common problem among the new 3 series.

Also, on an unrelated issue. He said someone had come in with a bad rust problem under the passenger seat too. I don't know what they plan to do about it though.
which dealer is this?
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      01-16-2013, 01:26 PM   #64
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which dealer is this?
Long Beach BMW. They are replacing the rusted seat pans though.

They are still working on the aux cooling fan issue.
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      01-16-2013, 02:03 PM   #65
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Is this limp problem happening with only 335 M sports or are other lines/makes experiencing it also?
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      01-16-2013, 02:30 PM   #66
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Is this limp problem happening with only 335 M sports or are other lines/makes experiencing it also?
AFAIK it's only on the M-Sport due to different cooling configuration. After the fix I took a trip to AZ and she felt just fine. Nice pulling in 6th gear and climbing over the mountains.

It was fairly chilly (37F-40F) with the oil temp just under 250 the whole way.
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