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G20 combine 1CR remote start and 536 auxiliary heater
01-01-2023, 11:07 AM, (This post was last modified: 02-01-2023, 09:17 AM by MichaelNRW.)
Post: #1
XZBMW  G20 combine 1CR remote start and 536 auxiliary heater
Hi there and a happy new year!

I got a G21 M340i Touring with 536 auxiliary heater equipped.
I´m currently talking to FEMto about the ECU unlock and the 1CR remote start patch for cars that can´t be equipped with it from the factory.

Now i searched for the blow by heater in the part catalogue for a friend to retrofit and found an interesting information.
It´s not allowed to retrofit the 536 auxiliary heater in cars with 1CR remote start.

Does someone already did something like that and has a car with 1CR and 536 equipped?

I would like to use the remote start in the summer to cool the car and the blow by heater in the winter to warmup the car.
While the remote start would also be useful in the winter, the blow by heater does a better job and also heats the small cooling circuit.

Cheers!

Edit: I mixed up 4NE and 536 because my car is equipped with both options.
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01-01-2023, 19:22 PM,
Post: #2
RE: G20 combine 1CR remote start and 4NE blow-by heater
"the blow by heater does a better job and also heats the small cooling circuit."
4NE does not heat the engine, and cooling circuit !


Engine ventilation heating
The engine ventilation heating is attached to the blow-by pipe.

When the engine is cold, the engine ventilation heating prevents ice formation from freezing condensation within the engine ventilation.

The engine ventilation heating is the optional equipment SA4NE (generally for cold country version.)

Functional description
If freezing occurs in the engine ventilation system, the pressure in the crankcase may increase. This may cause engine oil to be burnt or pushed past gaskets out of the engine. The oil loss can lead to total destruction of the engine.

The DME control unit activates the engine ventilation heating (many motorisations via relay).

Switch-on conditions:

Terminal 15 on
The engine ventilation heating warms up when the ignition is switched on. Depending on the ambient temperature, heating may be completed in a shorter space of time."


Vanos
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02-01-2023, 09:16 AM,
Post: #3
RE: G20 combine 1CR remote start and 4NE blow-by heater
(01-01-2023, 19:22 PM)vanos Wrote:  "the blow by heater does a better job and also heats the small cooling circuit."
4NE does not heat the engine, and cooling circuit !

I may used the wrong SA in my description, the correct one is 536.

Please have a look at a G20 and "Stationary auxiliary heater".

Quote:Stationary heater circulating pump

The stationary heater circulating pump maintains the coolant circuit during auxiliary heating operation and in the necessary after-run.In auxiliary heating mode, the coolant pump assists the circulating pump.
The stationary auxiliary heater control unit activates the circulating pump directly.


Quote:Coolant changeover valve, stationary auxiliary heater

The stationary auxiliary heater coolant changeover valve controls the flow of coolant to the auxiliary heater.
The stationary auxiliary heater coolant changeover valve is a 3/2-way valve. The valve controls the supply to the stationary auxiliary heater as follows:
  • From the radiator feed
  • or from the reverse flow from the heating system heat exchanger
The stationary auxiliary heater control unit (control unit of the auxiliary heater) activates the coolant changeover valve of the stationary auxiliary heater directly. The switch-on and switch-off message comes from the engine control unit (DME or DDE) as well as from the IHKA control unit
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