Replacing Heater Controller ECU - Smart Fortwo 451 Passion 84 BHP - Poor Temperature Regulation

[@mariokibys]

Thank you for your great work, I enjoy every video of yours.

[@michaelglynn2638]

Good job. Good filming too! 👍

[@JohnMonaghan-uv6nm]

Great video again, every detail shown making life easier for us. Mine had the 3lines on the dash but your video on the earth strap to the engine and cleaning it fixed mine , 300miles on and its perfect, thanks.

[@jimmyadams628]

You're THE MAN 😊

[@jurgenberg5941]

Danke, wieder ein interessantes Video! Viel Erfolg mit dem Getriebe-Stellmotor. Gruß Jürgen

[@Jaxs2]

Just the job 👌

[@brianlynch2512]

Thanks for your videos, very detailed and I love it!

[@WBSoCal]

I will be looking forward to see if that solves your problem. I similarly have the same issue. I was told that it might be the thermistor down below in the air duct that could be causing the problem.

[@darrenfox5883]

Thank you for posting this. I am having the opposite issue in that almost any setting off of the bottom is nearly full heat. I wonder if it is possible to get into the unit to see if the problem with the variable resistor is repairable?

[@91strelok]

Hey I see your radio volume button is the same as ours (paint is sticky and falling apart). We recently wiped it with paint thinner and ours is now completely white :D Unfortunately the button is longer than it seems and has an edge keeping it from pulling it out. I am going to take apart the radio and paint the button with some durable paint, but hey, in case you are willing to go trough this venture before us let us know.

[@tine8849]

Well this sounds familiar. I had this problem when winter hit hard a few weeks ago. I also had my AC regassed last summer and it would blow cold for bit but stopped, so I thought I had a leak but occasionally out of nowhere it'd blow cold. I wonder if this was the issue.

[@johnprice9778]

Have you ever removed the glow plug controller on a 2009 451 CDI. There doesn't seem to be any room to get your hand in. Regards. John Price. Keep the good work up

[@autoknight747]

@@johnprice9778 I’ve never been involved with the diesel variants of these cars, just the petrol models.

[@benellias87]

I have a facelift 451 the dash seems to be one solid bit, any ideas how to remove a climate control..?

[@Quickblood1]

Is there anyway to ensure this is the issue or the new used part doesn't have the same problem?

[@autoknight747]

If the part is used then you are rather at the mercy of the seller. My old HVAC control unit was actually showing a fault code stating it was defective. That’s pretty conclusive!

[@Quickblood1]

@@autoknight747 Brilliant thanks, I'll have a look to see if I've got a fault code. Ta

[@greatunizuka]

How much does it cost for the new part?

[@autoknight747]

Not sure on the new price, you'd need to check with Smart/MB dealer. I bought the replacement part used on eBay for £30

[@greatunizuka]

@@autoknight747 thanks mate

[@one10hobbies78]

Dude, zoom out!