Mirror Heating

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Johntheo1
Bronze Member
Posts: 184
Joined: Mon Jan 11, 2021 8:52 am
Drives: 2018 MK10 AW1
Location: Cork

Mirror Heating

Post by Johntheo1 »

Can VCDS be used to change the method of controlling the above from the utterly stupid method of a on/off switch to contro from the HRS switch, at least the HRS will switch off automatically after 20 minutes or so or when it reaches a certain temperature I think.

I read in Briskoda that it can be done (Skoda) with long coding along the lines of
Controller 42
Drivers Door-Long coding-Rear window trigger
Not active - change to active

and dittoo with Controller 52 for the passenger side mirror.
RUM4MO
Bling Bling Diamond Member
Posts: 6069
Joined: Sat Dec 30, 2006 9:12 pm
Drives: B8 S4 & 6R/6C1 1.2TSI 110
Location: Mid Lothian

Re: Mirror Heating

Post by RUM4MO »

VW Group's way of controlling heated mirrors is a bit lacking, I was stupid enough to think that I could leave the mirrors on, like I did with my 1991 VX Cav GSI 4X4 when I bought my 2000 VW Passat 4Motion new, big mistake, only after reading about this issue on an America based forum, did I find out that I had trashed both heaters, so that cost a bit to replace both glasses.

Depending on your location, heated mirrors can be really useful, for people in other location maybe not so much.

A lot of the time I did them when driving the Polo out of the garage into a "slightly warmed up" outside air, they do their job quickly so normally I can remember to switch them off when stopped at the first road end, but there again, I've felt the pain of trashing a pair of mirror glasses, so maybe I'm still feeling that pain!

I don't think that there will be any way that the car's systems will get temperature feedback, it will just be based a fixed predetermined time that was found to be "okay".
SRGTD
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Joined: Sun Oct 11, 2015 9:40 pm
Drives: 2020 AW Polo GTI+, Pure White.
Location: UK

Re: Mirror Heating

Post by SRGTD »

@Johntheo1 - Sorry, don’t know if it’s possible, but maybe have a look on the OBD11 or VCDS forums?

I agree that it’s a stupid design - one that VW (and other VAG brands) has been using for too long IMHO. Even the mk3 Vauxhall Astra I owned in the early 1990’s had a better set-up - a separate on/off button and warning light in the upper part of the drivers interior door pull - just above the mirror glass adjustment control. If Vauxhall could do it over 30 years ago, then surely the mighty VAG could design something better for the 2020’s…….🤔.

My current (non-VAG) car’s door mirror heating works in conjunction with the rear screen demister the way you’d like your Polo’s to work.
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