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John Fair

Member Since: 10 May 2016
Location: Norfolk
Posts: 150

2013 Defender 110 Puma 2.2 USW Santorini Black

Alpine head unit won't power up until the car is warm.

Just wondering if anyone has had this happen to them. 2013 110 utilitiy xs so I think it's the one up from base but no sub etc. Anyway it has always failed to turn on when it's frosty out until the cab has warmed up. I haven't even looked yet but as it's winter this is a daily occurrence and I have to sing myself lots more than everyone would like. I guess the obvious is to pull the unit and see if the power drops out when cold or if it's the unit itself. Just wondering if anyone has experienced this. Also does anyone have the wiring diagram for the radio as if it's a power supply fault it will quicken me finding it. Thanks.
100% related to cold.

2nd Jan 2017 1:59pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Click image to enlarge

2nd Jan 2017 4:30pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20332

Does it have a removable face plate? ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

2nd Jan 2017 4:56pm

John Fair

Member Since: 10 May 2016
Location: Norfolk
Posts: 150

Thanks for the wiring and yes it has a removable faceplate. Makes no difference if you keep the faceplate warm.

3rd Jan 2017 12:02am

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

Try cleaning the contacts for the face plate on the head unit Ray
My build thread
http://www.defender2.net/forum/topic17615.html

3rd Jan 2017 12:39am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20332

Yep, that may help.
I used to do the same and it did but got worse, an issue I'll have to sort out.
I'm sure it's because the contacts are loose due to the Defender vibrations over time.
Creates higher resistance and dirty contacts and a bad connection, made worse with contraction of cold weather.

I'm going to spend day when I get time try hard wiring the two by soldering with a mini wiring section made up.
It may sort my issues, it may not, hooefully it will.
Currently my HU has been knocked out now for well over a year, I haven't had the time spot sort it out.
It is getting quite aged though, so if it doesn't work if sort it's self out I wouldn't be surprised.

It'll make tye HU flash on and off, not turn on, randomly shut off.
All those sort of things, if I had another I'd avoid a removable faceplate anyway. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

3rd Jan 2017 9:46am

miker

Member Since: 13 Sep 2015
Location: Surrey
Posts: 1763

I have an alpine in the other car. Getting on for 8 years old now and the connection between faceplate and unit can be very temperamental when cold. Do you tend to remove the faceplate when you park up? I think part of my problem is that I leave it in and the contacts have lost their springiness.

3rd Jan 2017 11:46am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20332

Yeah, used to leave it in.

Only cure I can think of is individually soldering wire tails to each corresponding pin.
No need to I.D them if you methodically match one by one.
The bigger issue is to cut the front out of the HU to allow for extra room, providing there is some room to play with.

If I get another one day, I really don't want a removable face plate.
That's if it's 1DIN or 2 DIN isn't an issue.
Although rather 'old hat' now anyway, I never ran CD's.
I swear it'd only be a matter of time before it'd go colters pear shaped due to a pot hole or similar.
Defenders are not forgiving at all for that kind of thing. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

3rd Jan 2017 12:49pm

John Fair

Member Since: 10 May 2016
Location: Norfolk
Posts: 150

Sorry for the delay replying. Your prognosis sounds reasonable as I don't always remove the faceplate but would feel it's slightly worse if I have. I shall look into that. The only contradiction is it's done it from 3k miles. I did ask lr if it was covered under extended warranty but he didn't know 😂😂😂 putting the care into customer.
TBH to a point I'm not overly bothered as it might prompt me to change it out as I find it overly fiddly for a bouncy defender.

3rd Jan 2017 9:49pm

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