Hello Guys,

I am retrofitting a webasto FBH to my car (UK model). The only missing part of the puzzle is where to connect the blower cable from the webasto FBH unit to turn on the blower in the car. This is to turn the car's blower on when the FBH is at a certain temperature

Many Thanks

Hi Germplus1,

I don't think that's possible for freelander. But maybe I'm wrong, in which case I'm really curious, as well, about how it could be done. MY2011, TD4 Auto, Xenon headlights, fog lamps DRLs, sunroof, tinted windows, almond electric seats w/ lumbar support, leather steering wheel w/ audio controls, dog/luggage guard, ambient lights, flush Whispbars, Mantec sump&tank guards, Xtrons Head Unit

Webasto fuel burning heaters were fitted as standard to Freelander 2 mainly LHD vehicles.
I’m not sure about pre MY13 but post heaters were all CAN based. MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

Last edited by Stuartc on 14th Aug 2020 8:37 am. Edited 1 time in total

@Stuartc
Probably he wants to turn it on/off manually, not automatically by the engine.

@Germplus1
You can make some modifications with a couple of relays, but that means that the blower will run at full power. And the blower fan on full power is an electric hog.
Otherwise, you will need that FBH blower output to drive an an additional module that will, in turn, drive by PWM the fan controller, like the HVAC is doing.

Hello Alex

Thank you for the information. I installed a relay to control the speed of the fun.
The relay came complete with the harness i bought on ebay.

https://www.ebay.co.uk/itm/113445820338

Just need to find where it hacks into the blower.

And yes. I am controlling the entire FBH manually. ( I will switch it on when I want. Not the car’s ECU )

Take the schematics from https://www.freel2.com/forum/topic2943.html
And see on page 47 or 50, depending of your equipment and devise a way to drive the blower motor, as I've told you in the previous message.

Fabulous. Thank you. Will keep you updated 😊

See that Webasto is selling a PWM module for driving the blower fan module for Discovery 3. It may be as well working on Freelander.
See on the bellow documentation, on page 7, that IPCU module. It may also suggest you how to modify the car's schematic.
https://www.disco3.co.uk/gallery/albums/us...motopv.pdf

Or, in the end, visualize the PWM signal from HVAC module and reproduce it with a microcontroller.

Project done. Well chuffed. Thanks for the information guys. Especially Alex.

Last edited by Germplus1 on 3rd May 2021 9:02 pm. Edited 2 times in total

Now, if it's not to much to ask, maybe you will share with the community what have you done.
Maybe some schematics, etc...
Thanks!

Hello Alex

I made a video, will edit and upload it on youtube and share the link here.

Regards.

alex_pescaru wrote:

Now, if it's not to much to ask, maybe you will share with the community what have you done.
Maybe some schematics, etc...
Thanks!

WELL DONE!!
Thank you for sharing!

Hello
Germplus1. Thanks for your tips.
Couldn't find on the videos.
How did you connect the fan?
I've got everything sorted but have no idea where to connect and start the cabin fan? I'd like to feed it via resistor pack so it doesn't run on full blow.
Thanks

Hello mikescotland,
I connected the cabin blower By tapping into the car’s resistor. Just by the passenger's footwell ( UK Model )
You will need to buy a PWM fan controller to lower the voltage so the fan will not run at 12V to preserve the battery.

You will also need a relay to Switch the PWM Fan controller off when your car’s ignition is on so cabin blower fan will behave normal.

Below is the link for the aftermath resistor I used. I'm currently away. Will make a video when when back.


Kyrio DC Motor Speed Control... https://www.amazon.co.uk/dp/B08761BVBN?ref=ppx_pop_mob_ap_share

Regards.
Germplus

Last edited by Germplus1 on 13th Apr 2021 12:02 am. Edited 2 times in total