E92 Indepedent Heating via I-drive
Discussion
Does anyone know how effective the independent heating function on a e92 335 is? I have just purchased the car and although i have read the user manual regarding this there is no mention of whether the car must start up automatically in order to preheat the car. I assume the car must start itself first??? I dont have the stated remote fob mentioned in the manual although i believe just using the idrive timer settings will suffice. Any remarks will be appreciated.
Unless you have specced the eberspächer type heater, the function in the Idrive will only work on residual heat (same as pushing the "rest" button on your aircon whilst the engine is off) - hence if the car's not warm, there'll be no heating effect.
It will demist and vent the car when the timer is set, however it will stop itself after a while to safe power.
It will demist and vent the car when the timer is set, however it will stop itself after a while to safe power.
I think it works... I've been experimenting with it myself but keep buggering up the settings...
on Monday I set it for 6.45 pm
on Tuesday I set it for 7am but forgot we were leaving late that day. It LOOKED like the ice had been defrosted, slid down the screen, and then refrozen. But I couldn't be sure!
on Wednesday I forgot to set it
this morning it was raining.
I got the impression it was supposed to switch on the engine for 1/2 hr... and put the screen heater on full blast. Hence it says "do not use this feature in a confined space" as the exhaust fumes would be a problem.
on Monday I set it for 6.45 pm
on Tuesday I set it for 7am but forgot we were leaving late that day. It LOOKED like the ice had been defrosted, slid down the screen, and then refrozen. But I couldn't be sure!
on Wednesday I forgot to set it
this morning it was raining.
I got the impression it was supposed to switch on the engine for 1/2 hr... and put the screen heater on full blast. Hence it says "do not use this feature in a confined space" as the exhaust fumes would be a problem.
noneedtolift said:
Unless you have specced the eberspächer type heater, the function in the Idrive will only work on residual heat (same as pushing the "rest" button on your aircon whilst the engine is off) - hence if the car's not warm, there'll be no heating effect.
It will demist and vent the car when the timer is set, however it will stop itself after a while to safe power.
Does the same thing apply to the 6 series? I noticed this option in the menus, might have to give it a try now it's winter.It will demist and vent the car when the timer is set, however it will stop itself after a while to safe power.
I think it was an option on some models comprising a second battery and heating element. On the 3 series I think it is/was available on the SE version but not M Sport due to limited space due to design of front spoiler. If I'm incorrect and its an easy (cheap) retro fit to an E92 M Sport someone pls let me know
Suprised nobody has yet twigged how this work. There is a seperate diesel powered preheater fitted to the diesel models to aid with heating the car given how long it takes a diesel to warm up. You can set this heater to fire up on some models. The reason why you cant use the feature in a confined space is not becuase it turns the engine on but becuase the heater is diesel powered and emits fumes as the engine would do.
Fox- said:
Suprised nobody has yet twigged how this work. There is a seperate diesel powered preheater fitted to the diesel models to aid with heating the car given how long it takes a diesel to warm up. You can set this heater to fire up on some models. The reason why you cant use the feature in a confined space is not becuase it turns the engine on but becuase the heater is diesel powered and emits fumes as the engine would do.
Eh? So there is another cylinder apart from the 6 "engine" ones in my car? I don't think diesels burns unless it is under pressure, but you make it sound like there is an oil-fired burner that can be turned on by iDrive!There is a diesel fired heater, seperate to the engine, yes.
It's similar to these:
http://www.webasto.co.uk/general/graphics/file_car...
It's similar to these:
http://www.webasto.co.uk/general/graphics/file_car...
Fox- said:
There is a diesel fired heater, seperate to the engine, yes.
It's similar to these:
http://www.webasto.co.uk/general/graphics/file_car...
I'm not seeing it listed on bmw's 'build your car' spec list?It's similar to these:
http://www.webasto.co.uk/general/graphics/file_car...
My 535d has that functionality but it is based on latent heat, not diesel powered.
I'd be surprised if there was an extra diesel powered heater in there for it.
Imagine what the neighbours would say...
It is standard fit on the diesels so it won't be listed on the options. The diesels have them fitted as standard because the engine itself takes too long to warm up without assistance.
If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
Fox- said:
It is standard fit on the diesels so it won't be listed on the options. The diesels have them fitted as standard because the engine itself takes too long to warm up without assistance.
If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
Cool.If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
Will have a look.
Fox- said:
There is a diesel fired heater, seperate to the engine, yes.
On the E38 and E39 at the very least there was the option of a phase change latent heat store which stored heat from the coolant by liquefying a crystalline material and recrystallising it on cue, just like the pocket warmers...In either case you need the optional cold climate equipment to be fitted.
fluffnik said:
Fox- said:
There is a diesel fired heater, seperate to the engine, yes.
On the E38 and E39 at the very least there was the option of a phase change latent heat store which stored heat from the coolant by liquefying a crystalline material and recrystallising it on cue, just like the pocket warmers...Fox- said:
fluffnik said:
On the E38 and E39 at the very least there was the option of a phase change latent heat store which stored heat from the coolant by liquefying a crystalline material and recrystallising it on cue, just like the pocket warmers...
Correct but it was a hugely rare option fitted mainly to a handleful of 540i's and 740i's.
I suspect it's a much more common option in properly cold places.
Fox- said:
It is standard fit on the diesels so it won't be listed on the options. The diesels have them fitted as standard because the engine itself takes too long to warm up without assistance.
If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
Standard fit on which models?If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
phelix said:
Fox- said:
It is standard fit on the diesels so it won't be listed on the options. The diesels have them fitted as standard because the engine itself takes too long to warm up without assistance.
If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
Standard fit on which models?If you don't beleive me start your car from cold and have a look outside, you might be able to see the exhuast fumes from it from the side of the car.
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