What did you do to / for your E53 today??

[snik]

My dudes. What is that box on the right side. I see it in pics of euro X5s a lot, but I don't have it on mine, nor have I ever seen it on a us model.



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[wpoll]

Originally Posted by snik

My dudes. What is that box on the right side. I see it in pics of euro X5s a lot, but I don't have it on mine, nor have I ever seen it on a us model.



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Webasto Thermotop aux. heater. Fitted to diesel models mostly but available as an option petrol cars too.

[snik]

Originally Posted by wpoll

Webasto Thermotop aux. heater. Fitted to diesel models mostly but available as an option petrol cars too.

Ahhhh. That's the auxiliary heat pump?


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[wpoll]

Originally Posted by snik

Ahhhh. That's the auxiliary heat pump?


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Not quite - the aux. water pump is an electric water pump (like a big fish tank pump!) usually mounted in behind the left headlight. I think all e53 cars have this fitted.

The Webasto Thermotop aux. HEATER is an actual fuel-fired (diesel in my case) heater, that heats the engine coolant, to bring the engine up to temp quickly in cold weather. In conjunction with the aux. water pump, it can also be activated when the car is not running (by remote control) to heat the cabin (via engine coolant and the heater core) - great on a frosty morning!

*edit* If anyone is interested, I'll post a video of it's operation.

[snik]

Originally Posted by wpoll

Not quite - the aux. water pump is an electric water pump (like a big fish tank pump!) usually mounted in behind the left headlight. I think all e53 cars have this fitted.



The Webasto Thermotop aux. HEATER is an actual fuel-fired (diesel in my case) heater, that heats the engine coolant, to bring the engine up to temp quickly in cold weather. In conjunction with the aux. water pump, it can also be activated when the car is not running (by remote control) to heat the cabin (via engine coolant and the heater core) - great on a frosty morning!



*edit* If anyone is interested, I'll post a video of it's operation.

Sounds like the same thing that some E53, 39, 38s have that can warm the cabin using the aux timer setup that's on the radio.


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[wpoll]

Originally Posted by snik

Sounds like the same thing that some E53, 39, 38s have that can warm the cabin using the aux timer setup that's on the radio.


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I know some cars have a "REST" function that uses residual engine heat and the aux. water pump to pump hot coolant through the heater core when the engine is not running (but has been recently).

This is NOT that - it's entirely different. It heats the coolant directly.

[Overboost]

Originally Posted by wpoll

*edit* If anyone is interested, I'll post a video of it's operation.

Yes, please Wayne. I would love to educate myself a little more on the Webesto heater. We don't get them over here that I have ever seen.

[wpoll]

Originally Posted by Overboost

Yes, please Wayne. I would love to educate myself a little more on the Webesto heater. We don't get them over here that I have ever seen.

Here a quick video description of the Webasto Thermo Top Z operation

https://youtu.be/trPWg1arWFg

[andrewwynn]

Originally Posted by Overboost

Yes, please Wayne. I would love to educate myself a little more on the Webesto heater. We don't get them over here that I have ever seen.

Since they run on diesel makes sense you can't find in the USA. I've been working on some way to pre heat our X5 especially when it's -20C. There was a block heater you could buy in Canada for m54 but most promising is a heater that taps into the heater core loop.

I believe you can configure the webasto with a standalone diesel tank to work on gas powered car.

[wpoll]

Originally Posted by andrewwynn

Since they run on diesel makes sense you can't find in the USA. I've been working on some way to pre heat our X5 especially when it's -20C. There was a block heater you could buy in Canada for m54 but most promising is a heater that taps into the heater core loop.

I believe you can configure the webasto with a standalone diesel tank to work on gas powered car.

The Webasto Thermo Top Z has a pertol version, and the diesel version (easier to find on eBay) can be re-configured to work with petrol.

alex_j posted a DIY on this retro fit (to a 4.8iS) late last year..

https://xoutpost.com/bmw-sav-forums/...e53-4-8is.html