Thread: P38 HEVAC Unit

Hi Gary, Simon Schiwy here - we have exchanged messages about my car's heavy and other issues. You mentioned you live in Canberra. I am located in Googong. If you happy to chat about the issues with my car please let me know and your mobile number. Cheers, Simon

Good evening one and all. Since posting the issue I managed to order a refurb HEVAC from UK plus some other parts and have put the car in to an auto elect to fix the issue. Long story short the new unit has not fixed the issue. The seller said the unit was compatible with my car - last of the series in 2002. The new HEVAC unit gets more cold air out but it seems the mode actuator does not activate the selected mode fully as the gear does not move far enough to get full force of air out of the face vents. The auto elect took some videos and said the old unit moved the flaps further. The new unit still also has the book page up. Any advice gratefully received. cheers, Simon

The new unit (second hand) has the blend motors calibrated to the car it came from, ie. differently. You need a device that can do that for you (like a faultmate). Once that is done you can reset the fault memory and excersice the unit (ie let the tester run the flaps back and forth) to see if you get any more errors.

Cheers,
-P

Originally Posted by prelude

The new unit (second hand) has the blend motors calibrated to the car it came from, ie. differently. You need a device that can do that for you (like a faultmate). Once that is done you can reset the fault memory and excersice the unit (ie let the tester run the flaps back and forth) to see if you get any more errors.

Cheers,
-P

Many thanks Prelude. I will go in search of a nanocm evo fault mate!

Many thanks Prelude

Originally Posted by garybrook

Hi Simon,

I had to repair my HEVAC on my 2000 P38 as some sections of the screen had failed earlier. I bought the zebra part from the UK so I safely stripped the body from the back of the harness and it eventually worked, after about 4 attempts. The zebra is fragile as are the electronics, but itÂ’s doable as mine is still working after 5+ years since the repair. IÂ’m not sure but I may have bought another spare zebra, just in case - which is usual to me as the experience of maintaining a P38 is challenging.

I understand you have a few other issues on your blend distribution system. Mine hasnÂ’t broken yet but Â…. If you need a hand you can contact me through here as IÂ’ve lived in Canberra since the late 70Â’s and IÂ’ve been using a Nanocom EVO as soon as I bought my P38.

At the moment IÂ’m trying to get my ABS ECU to talk to the BECM as I think the ECM thinks it is new and doesnÂ’t know the VIN of my car, which the rest of the system does. Hence ABS and TC dash warnings, but the powered brakes work as normally, so we all have to learn. Regards, Gary.

Hi Gary, keen to take you up on your offer of using the EVO, cheers, Simon