Heater Woes

fatboy_coach · 01-06-2019, 08:38 AM

So a week into ownership and it looks like it's time to call on the warranty

Heater seemed to be working but a little noisy so I removed the fan to check for leaves. The motor is spinning fine in the footwell, changing speed with the controls as expected. There were no leaves found, so I reassembled everything and now there is no air blowing though at all, I've had the motor out a second time to check I've reassembled everything ok and the motor seems fine when not fitted into the housing.

I then took the car to get the aircon checked incase the gas was low and the tech noted that the AC wouldn't kick in despite the correct amount of gas being in the system. I can hear the vents changing when you adjust where the air should be coming from but I don't get any airflow. Any ideas? I'd like to rule everything out before potentially losing the car for a while.

robbiep · 01-06-2019, 10:13 AM

Well, lots of warranties have the equivalent of 'amateur has fucked about with it and made it worse, so no longer under warranty' clause.

Might I suggest the first step being this : you stop digging the hole even deeper.

Second step being : call the dealer, and let people who actually know what they are doing play with it.

Panchoa · 01-06-2019, 10:38 AM

Quote:

Originally Posted by robbiep

Well, lots of warranties have the equivalent of 'amateur has fucked about with it and made it worse, so no longer under warranty' clause.

Might I suggest the first step being this : you stop digging the hole even deeper.

Second step being : call the dealer, and let people who actually know what they are doing play with it.

If you have warranty buddy, use it and call them!!

ukbeemerboy · 01-06-2019, 10:56 AM

Quote:

Originally Posted by fatboy_coach

So a week into ownership and it looks like it's time to call on the warranty

Heater seemed to be working but a little noisy so I removed the fan to check for leaves. The motor is spinning fine in the footwell, changing speed with the controls as expected. There were no leaves found, so I reassembled everything and now there is no air blowing though at all, I've had the motor out a second time to check I've reassembled everything ok and the motor seems fine when not fitted into the housing.

I then took the car to get the aircon checked incase the gas was low and the tech noted that the AC wouldn't kick in despite the correct amount of gas being in the system. I can hear the vents changing when you adjust where the air should be coming from but I don't get any airflow. Any ideas? I'd like to rule everything out before potentially losing the car for a while.

You’ve just void your warranty

cfm56d7b · 01-06-2019, 11:00 AM

To satisfy natural human curiosity, investing in model specific technical maintenance manual is a good first step - if you plan to keep the car.

During the warranty: read the manual but take the vehicle to the dealer.

After the warranty: read the manual and follow repair steps.

Earlier comments about using the warranty make perfect sense.

obert · 01-06-2019, 11:33 AM

Might not be a good idea to show them your post on here. Take it in and let them deal with it.

NanasBack · 01-06-2019, 12:42 PM

Warranty or not.

If the noise relates to a foreign object or something that has not actually failed, you will get a bill.
OP was probably just trying to avoid this.

Does nobody fiddle with things these days?

Watsey · 01-06-2019, 01:33 PM

A load of generally unhelpful soapbox replies to the OP's question.

OP - there's no harm in looking for the obvious things before you take the car to the dealer (e.g. leaves in the fan housing), it could save you and the dealer a lot of time and hassle, but personally I'd avoid removing the fan itself or disclosing too much to the dealer.

ukbeemerboy · 01-06-2019, 04:32 PM

Quote:

Originally Posted by Watsey

A load of generally unhelpful soapbox replies to the OP's question.

OP - there's no harm in looking for the obvious things before you take the car to the dealer (e.g. leaves in the fan housing), it could save you and the dealer a lot of time and hassle, but personally I'd avoid removing the fan itself or disclosing too much to the dealer.

So you’ve just agreed with the unhelpful soapbox remarks and told him to avoid doing something he’s already done

Sasquartch · 01-06-2019, 05:14 PM

If you're at all technical get ISTA/D set up on a PC and buy a cable off Amazon

Lots of threads on here about how to do this

Then you can run the dealer diagnostics to see if anything electrical causing an issue. This is probably the first thing a BMW dealer will do anyway

However as already discussed return to the selling dealer first and get them to sort out

Revoltos · 01-07-2019, 06:24 AM

Could it be the resistor pack has failed on the side of the motor assembly? Unlikely I know. Or even more simply, when you took it apart, the harness from the motor to the resistor pack has come unplugged or the car harness to resistor pack isn't connected correctly? You may have had one problem (leaves etc) and in fixing that created another.

Stew_Pid · 02-23-2021, 12:03 PM

Did you get this sorted? Mine's just done exactly the same, removed and unplugged the motor to check for debris and now it won't fire up. Controls look normal but no blower motor action.

G50 · 02-24-2021, 06:24 AM

My AUC F31 had this issue the day it was delivered! Heater control display worked, but no air, hot or cold. Fixed under warranty, didn't have any issues for the remainder of my time with the car.

01-06-2019, 08:38 AM	#1
fatboy_coach New Member 0 Rep 11 Posts Drives: F30 330D Join Date: Dec 2018 Location: Hampshire iTrader: (0)	Heater Woes So a week into ownership and it looks like it's time to call on the warranty Heater seemed to be working but a little noisy so I removed the fan to check for leaves. The motor is spinning fine in the footwell, changing speed with the controls as expected. There were no leaves found, so I reassembled everything and now there is no air blowing though at all, I've had the motor out a second time to check I've reassembled everything ok and the motor seems fine when not fitted into the housing. I then took the car to get the aircon checked incase the gas was low and the tech noted that the AC wouldn't kick in despite the correct amount of gas being in the system. I can hear the vents changing when you adjust where the air should be coming from but I don't get any airflow. Any ideas? I'd like to rule everything out before potentially losing the car for a while.
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01-06-2019, 10:13 AM	#2
robbiep Brigadier General 1983 Rep 3,216 Posts Drives: VW e-Golf ! Join Date: Dec 2013 Location: North Wales, UK iTrader: (0)	Well, lots of warranties have the equivalent of 'amateur has fucked about with it and made it worse, so no longer under warranty' clause. Might I suggest the first step being this : you stop digging the hole even deeper. Second step being : call the dealer, and let people who actually know what they are doing play with it.
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01-06-2019, 11:00 AM	#5
cfm56d7b Lieutenant General 5876 Rep 10,247 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	To satisfy natural human curiosity, investing in model specific technical maintenance manual is a good first step - if you plan to keep the car. During the warranty: read the manual but take the vehicle to the dealer. After the warranty: read the manual and follow repair steps. Earlier comments about using the warranty make perfect sense.
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01-06-2019, 11:33 AM	#6
obert Brigadier General 1781 Rep 4,456 Posts Drives: 2013 328i Join Date: Oct 2011 Location: Seattle Wa iTrader: (49)	Might not be a good idea to show them your post on here. Take it in and let them deal with it.
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01-06-2019, 12:42 PM	#7
NanasBack Lieutenant 199 Rep 542 Posts Drives: EB 335 oil burner Join Date: Aug 2017 Location: Staffs, UK iTrader: (0)	Warranty or not. If the noise relates to a foreign object or something that has not actually failed, you will get a bill. OP was probably just trying to avoid this. Does nobody fiddle with things these days? __________________ 335d xDrive
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01-06-2019, 01:33 PM	#8
Watsey Major General 6399 Rep 8,488 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	A load of generally unhelpful soapbox replies to the OP's question. OP - there's no harm in looking for the obvious things before you take the car to the dealer (e.g. leaves in the fan housing), it could save you and the dealer a lot of time and hassle, but personally I'd avoid removing the fan itself or disclosing too much to the dealer. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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01-06-2019, 05:14 PM	#10
Sasquartch Major 606 Rep 1,454 Posts Drives: 520i G30 Join Date: Aug 2016 Location: Herts iTrader: (0)	If you're at all technical get ISTA/D set up on a PC and buy a cable off Amazon Lots of threads on here about how to do this Then you can run the dealer diagnostics to see if anything electrical causing an issue. This is probably the first thing a BMW dealer will do anyway However as already discussed return to the selling dealer first and get them to sort out
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01-07-2019, 06:24 AM	#11
Revoltos Second Lieutenant 53 Rep 268 Posts Drives: BMW F30 335i Join Date: Apr 2017 Location: England iTrader: (0)	Could it be the resistor pack has failed on the side of the motor assembly? Unlikely I know. Or even more simply, when you took it apart, the harness from the motor to the resistor pack has come unplugged or the car harness to resistor pack isn't connected correctly? You may have had one problem (leaves etc) and in fixing that created another.
	Appreciate 0 Quote

02-23-2021, 12:03 PM	#12
Stew_Pid Private First Class 34 Rep 105 Posts Drives: F31 330d Xdrive Join Date: Mar 2020 Location: UK iTrader: (0)	Did you get this sorted? Mine's just done exactly the same, removed and unplugged the motor to check for debris and now it won't fire up. Controls look normal but no blower motor action. __________________ Stupid is as stupid does...
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02-24-2021, 06:24 AM	#13
G50 Captain 932 Rep 858 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	My AUC F31 had this issue the day it was delivered! Heater control display worked, but no air, hot or cold. Fixed under warranty, didn't have any issues for the remainder of my time with the car.
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