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External
Since: Oct 21, 2007
Posts: 10
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(Msg. 1) Posted: Mon Oct 29, 2007 10:42 pm
Post subject: Heater fan issue - 2002 325i
Archived from groups: alt>autos>bmw (more info?)
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I have a 2002 325i and I guess it is just getting to that point where
repairs are going to dog me. I recently posted about my oil light issue,
thanks for all the responses but I also have two other issues. I think my
battery is getting towards the end and that;s an easy fix, just drop a new
one in. Or is it? Will I need to have the module reset, or does that take
care of itself? Also, I'd appreciate any recommendations for a new battery.
Item two is a bit more involved. The heater fan flucuates faster and slower
and even runs when the car is turned off. (see previous problem - can you
say dead battery? I had to roll start it tonight ) It has actually done
this since the car was a year or so old, but it's more pronounced now and
the battery has less reserve. At the time the BMW tech told me it was the
wind or some such nonsense, but as usual, it wasn't real noticable. I don;t
think that I'll have much luck having them cover a portion under warranty
but I'll bring the repair order in anyhow. What would cause this with the
heater fan?
Thanks in advance
Larry |
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External
Since: Jun 22, 2004
Posts: 986
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(Msg. 2) Posted: Tue Oct 30, 2007 9:55 am
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article ,
LJ wrote:
> I have a 2002 325i and I guess it is just getting to that point where
> repairs are going to dog me. I recently posted about my oil light
> issue, thanks for all the responses but I also have two other issues.
> I think my battery is getting towards the end and that;s an easy fix,
> just drop a new one in. Or is it? Will I need to have the module
> reset, or does that take care of itself? Also, I'd appreciate any
> recommendations for a new battery.
Only thing likely to need resetting is the radio station memory.
> Item two is a bit more involved. The heater fan flucuates faster and
> slower and even runs when the car is turned off. (see previous problem
> - can you say dead battery? I had to roll start it tonight ) It has
> actually done this since the car was a year or so old, but it's more
> pronounced now and the battery has less reserve. At the time the BMW
> tech told me it was the wind or some such nonsense, but as usual, it
> wasn't real noticable. I don;t think that I'll have much luck having
> them cover a portion under warranty but I'll bring the repair order in
> anyhow. What would cause this with the heater fan?
Your dealer is taking the p**s. You've got the 'standard' final stage
resistor problem that plagues these cars. Mine has had two replacements.
If it was under warranty demand they fix it. I can't believe they've never
seen this problem before as it effects just about every car at some time.
--
*A conscience is what hurts when all your other parts feel so good *
Dave Plowman dave.TakeThisOut@davenoise.co.uk London SW
To e-mail, change noise into sound. |
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External
Since: Dec 09, 2003
Posts: 219
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(Msg. 3) Posted: Tue Oct 30, 2007 9:55 am
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 30 Oct 2007 09:55:13 +0000 (GMT), "Dave Plowman (News)"
wrote:
>In article ,
> LJ wrote:
>> I have a 2002 325i and I guess it is just getting to that point where
>> repairs are going to dog me. I recently posted about my oil light
>> issue, thanks for all the responses but I also have two other issues.
>> I think my battery is getting towards the end and that;s an easy fix,
>> just drop a new one in. Or is it? Will I need to have the module
>> reset, or does that take care of itself? Also, I'd appreciate any
>> recommendations for a new battery.
>
>Only thing likely to need resetting is the radio station memory.
>
>> Item two is a bit more involved. The heater fan flucuates faster and
>> slower and even runs when the car is turned off. (see previous problem
>> - can you say dead battery? I had to roll start it tonight ) It has
>> actually done this since the car was a year or so old, but it's more
>> pronounced now and the battery has less reserve. At the time the BMW
>> tech told me it was the wind or some such nonsense, but as usual, it
>> wasn't real noticable. I don;t think that I'll have much luck having
>> them cover a portion under warranty but I'll bring the repair order in
>> anyhow. What would cause this with the heater fan?
>
>Your dealer is taking the p**s. You've got the 'standard' final stage
>resistor problem that plagues these cars. Mine has had two replacements.
>If it was under warranty demand they fix it. I can't believe they've never
>seen this problem before as it effects just about every car at some time.
But could the classic resistor failure cause the fan to run while the car is
turned off?
/daytripper
'00 s4 6spd >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Nov 15, 2005
Posts: 196
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(Msg. 4) Posted: Tue Oct 30, 2007 10:41 am
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Aug 24, 2005
Posts: 281
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(Msg. 5) Posted: Tue Oct 30, 2007 10:44 am
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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>daytripper wrote:
> But could the classic resistor failure cause the fan to run while the car is
> turned off?
Yes. It's actually a sort of hybrid module that melts down inside... there
is always-on power inside the module and it can get shorted to the output.
When you replace the resistor pack, open up the old one and look inside.
It's really a neat bit of technology... trouble is it isn't very reliable...
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis." >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Mar 12, 2005
Posts: 394
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(Msg. 6) Posted: Tue Oct 30, 2007 2:19 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"daytripper" wrote in message
> On Tue, 30 Oct 2007 09:55:13 +0000 (GMT), "Dave Plowman (News)"
> wrote:
>
>>In article ,
>> LJ wrote:
>>> I have a 2002 325i and I guess it is just getting to that point where
>>> repairs are going to dog me. I recently posted about my oil light
>>> issue, thanks for all the responses but I also have two other issues.
>>> I think my battery is getting towards the end and that;s an easy fix,
>>> just drop a new one in. Or is it? Will I need to have the module
>>> reset, or does that take care of itself? Also, I'd appreciate any
>>> recommendations for a new battery.
>>
>>Only thing likely to need resetting is the radio station memory.
>>
>>> Item two is a bit more involved. The heater fan flucuates faster and
>>> slower and even runs when the car is turned off. (see previous problem
>>> - can you say dead battery? I had to roll start it tonight ) It has
>>> actually done this since the car was a year or so old, but it's more
>>> pronounced now and the battery has less reserve. At the time the BMW
>>> tech told me it was the wind or some such nonsense, but as usual, it
>>> wasn't real noticable. I don;t think that I'll have much luck having
>>> them cover a portion under warranty but I'll bring the repair order in
>>> anyhow. What would cause this with the heater fan?
>>
>>Your dealer is taking the p**s. You've got the 'standard' final stage
>>resistor problem that plagues these cars. Mine has had two replacements.
>>If it was under warranty demand they fix it. I can't believe they've never
>>seen this problem before as it effects just about every car at some time.
>
> But could the classic resistor failure cause the fan to run while the car
> is
> turned off?
Er because it is connected to battery supply and lets current flow?
>
> /daytripper
> '00 s4 6spd >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Dec 09, 2003
Posts: 219
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(Msg. 7) Posted: Tue Oct 30, 2007 2:19 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 30 Oct 2007 14:19:37 -0000, "R. Mark Clayton"
wrote:
>
>"daytripper" wrote in message
>
>> On Tue, 30 Oct 2007 09:55:13 +0000 (GMT), "Dave Plowman (News)"
>> wrote:
>>
>>>In article ,
>>> LJ wrote:
>>>> I have a 2002 325i and I guess it is just getting to that point where
>>>> repairs are going to dog me. I recently posted about my oil light
>>>> issue, thanks for all the responses but I also have two other issues.
>>>> I think my battery is getting towards the end and that;s an easy fix,
>>>> just drop a new one in. Or is it? Will I need to have the module
>>>> reset, or does that take care of itself? Also, I'd appreciate any
>>>> recommendations for a new battery.
>>>
>>>Only thing likely to need resetting is the radio station memory.
>>>
>>>> Item two is a bit more involved. The heater fan flucuates faster and
>>>> slower and even runs when the car is turned off. (see previous problem
>>>> - can you say dead battery? I had to roll start it tonight ) It has
>>>> actually done this since the car was a year or so old, but it's more
>>>> pronounced now and the battery has less reserve. At the time the BMW
>>>> tech told me it was the wind or some such nonsense, but as usual, it
>>>> wasn't real noticable. I don;t think that I'll have much luck having
>>>> them cover a portion under warranty but I'll bring the repair order in
>>>> anyhow. What would cause this with the heater fan?
>>>
>>>Your dealer is taking the p**s. You've got the 'standard' final stage
>>>resistor problem that plagues these cars. Mine has had two replacements.
>>>If it was under warranty demand they fix it. I can't believe they've never
>>>seen this problem before as it effects just about every car at some time.
>>
>> But could the classic resistor failure cause the fan to run while the car
>> is turned off?
>
>Er because it is connected to battery supply and lets current flow?
Errrr, on every car I've ever owned - and that goes back to a 1956 Ford, and
up to a 2005 Durango - if the key isn't in the Run position there is no power
to the HVAC system.
Does BMW source their electricals from Lucas? 
/daytripper
'00 s4 6spd >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Mar 12, 2005
Posts: 394
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(Msg. 8) Posted: Tue Oct 30, 2007 5:17 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"daytripper" wrote in message
> On Tue, 30 Oct 2007 14:19:37 -0000, "R. Mark Clayton"
> wrote:
>
>>
>>"daytripper" wrote in message
>>
>>> On Tue, 30 Oct 2007 09:55:13 +0000 (GMT), "Dave Plowman (News)"
>>> wrote:
>>>
>>>>In article ,
>>>> LJ wrote:
>>>
>>> But could the classic resistor failure cause the fan to run while the
>>> car
>>> is turned off?
>>
>>Er because it is connected to battery supply and lets current flow?
>
> Errrr, on every car I've ever owned - and that goes back to a 1956 Ford,
> and
> up to a 2005 Durango - if the key isn't in the Run position there is no
> power
> to the HVAC system.
No kidding, but have you noticed how thinks like the interior lights, clock,
seats etc. still work when the key is out of the ignition. These are the
battery supply circuits, sometimes there may be more than one.
>
> Does BMW source their electricals from Lucas?
Bosch normally, but perhaps they made an exception for this unit.
>
> /daytripper
> '00 s4 6spd
Incidentally the auxiliary fan still works after the ignition is off too. >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Dec 09, 2003
Posts: 219
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(Msg. 9) Posted: Tue Oct 30, 2007 5:17 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 30 Oct 2007 17:17:26 -0000, "R. Mark Clayton"
wrote:
>
>"daytripper" wrote in message
>
>> On Tue, 30 Oct 2007 14:19:37 -0000, "R. Mark Clayton"
>> wrote:
>>
>>>
>>>"daytripper" wrote in message
>>>
>>>> On Tue, 30 Oct 2007 09:55:13 +0000 (GMT), "Dave Plowman (News)"
>>>> wrote:
>>>>
>>>>>In article ,
>>>>> LJ wrote:
>>>>
>>>> But could the classic resistor failure cause the fan to run while the
>>>> car
>>>> is turned off?
>>>
>>>Er because it is connected to battery supply and lets current flow?
>>
>> Errrr, on every car I've ever owned - and that goes back to a 1956 Ford,
>> and up to a 2005 Durango - if the key isn't in the Run position there is no
>> power to the HVAC system.
>
>No kidding, but have you noticed how thinks like the interior lights, clock,
>seats etc. still work when the key is out of the ignition. These are the
>battery supply circuits, sometimes there may be more than one.
Certainly, but none of those are HVAC related, and none of them are downstream
of the dropping resistor module...
>> Does BMW source their electricals from Lucas?
>
>Bosch normally, but perhaps they made an exception for this unit.
>Incidentally the auxiliary fan still works after the ignition is off too.
Very common, but again, not HVAC, nor the dropping resistor...
/daytripper
'00 s4 6spd >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Jun 22, 2004
Posts: 986
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(Msg. 10) Posted: Tue Oct 30, 2007 7:13 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article ,
daytripper wrote:
> Errrr, on every car I've ever owned - and that goes back to a 1956 Ford,
> and up to a 2005 Durango - if the key isn't in the Run position there is
> no power to the HVAC system.
But then they didn't have the rather clever feature with the electric
water pump that allows the heater to give output with the engine stopped
and the keys removed. Like perhaps when leaving kids in the car for a
moment while you pay for petrol etc. So to enable this the heater motor
circuit requires 'permanent' power.
> Does BMW source their electricals from Lucas?
If only BMW/Bosch were as forthcoming with their circuit diagrams as Lucas
were.
--
*Upon the advice of my attorney, my shirt bears no message at this time
Dave Plowman dave.TakeThisOut@davenoise.co.uk London SW
To e-mail, change noise into sound. >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Nov 15, 2005
Posts: 196
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(Msg. 11) Posted: Tue Oct 30, 2007 7:13 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Dec 09, 2003
Posts: 219
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(Msg. 12) Posted: Tue Oct 30, 2007 7:13 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 30 Oct 2007 19:13:41 +0000 (GMT), "Dave Plowman (News)"
wrote:
>In article ,
> daytripper wrote:
>> Errrr, on every car I've ever owned - and that goes back to a 1956 Ford,
>> and up to a 2005 Durango - if the key isn't in the Run position there is
>> no power to the HVAC system.
>
>But then they didn't have the rather clever feature with the electric
>water pump that allows the heater to give output with the engine stopped
>and the keys removed. Like perhaps when leaving kids in the car for a
>moment while you pay for petrol etc. So to enable this the heater motor
>circuit requires 'permanent' power.
Ah - now that makes sense, though in the bargain it enables the problem that
the OP has, and if it encourages parents to leave kids unattended in the car
while they're doing something a bit more involved than just paying for fuel,
it's not bright. A good tradeoff? I don't think so...
>> Does BMW source their electricals from Lucas?
>
>If only BMW/Bosch were as forthcoming with their circuit diagrams as Lucas
>were.
ahahahahaha!
/daytripper
'00 s4 6spd >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Mar 15, 2007
Posts: 36
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(Msg. 13) Posted: Tue Oct 30, 2007 8:30 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
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External
Since: Jun 22, 2004
Posts: 986
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(Msg. 14) Posted: Tue Oct 30, 2007 8:59 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article ,
pete wrote:
> >But then they didn't have the rather clever feature with the electric
> >water pump that allows the heater to give output with the engine stopped
> >and the keys removed. Like perhaps when leaving kids in the car for a
> >moment while you pay for petrol etc. So to enable this the heater motor
> >circuit requires 'permanent' power.
> Will my 2000 540 do that? I never realised it happening and I have had
> the car nearly 2 years now?
Button marked 'rest' on the heater panel. If the engine is hot it will run
the heater with the ignition off.
--
*Give me ambiguity or give me something else.
Dave Plowman dave RemoveThis @davenoise.co.uk London SW
To e-mail, change noise into sound. >> Stay informed about: Heater fan issue - 2002 325i |
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External
Since: Jun 22, 2004
Posts: 986
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(Msg. 15) Posted: Tue Oct 30, 2007 8:59 pm
Post subject: Re: Heater fan issue - 2002 325i [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article ,
daytripper wrote:
> >But then they didn't have the rather clever feature with the electric
> >water pump that allows the heater to give output with the engine stopped
> >and the keys removed. Like perhaps when leaving kids in the car for a
> >moment while you pay for petrol etc. So to enable this the heater motor
> >circuit requires 'permanent' power.
> Ah - now that makes sense, though in the bargain it enables the problem
> that the OP has, and if it encourages parents to leave kids unattended
> in the car while they're doing something a bit more involved than just
> paying for fuel, it's not bright. A good tradeoff? I don't think so...
I only used that as an example. I use it when parked up with the engine
off. Very useful. Helps stop global warming.
Plenty other things in the car are live with the engine off - and always
have been, even in your '56 Ford. That would be the model with brakes and
shocks extra?
--
*What do little birdies see when they get knocked unconscious? *
Dave Plowman dave DeleteThis @davenoise.co.uk London SW
To e-mail, change noise into sound. >> Stay informed about: Heater fan issue - 2002 325i |
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