Hi all, after leaving my 2012 Alphard sat over the Xmas period I found that my battery had discharged. After a jump and a charge I have got it going again (battery is only a year old). I thought all was well but I have no power to the radio/nav system which means I also have no reversing camera.

 

I know there is a window reset trick after battery replacement (which wasn't needed) but I wonder if there is something similar with the radio and reversing cam????

 

I cant find any youtube vids or related topics on here  Please help

Hello jason maybe a daft question have you checked fuses as you might have blown one also if no luck try asking north star conversions

I would go along with the blow fuse check. Maybe the jump start blew it. I think its in the passenger bay fuse box. Depending on your head unit, the rear camera will be powered from that. If its an aftermarket head unit, then they probably took the power from the same cable as the head unit

That was my 1st thought. I checked the one in the drivers side foot well labelled 'Rad2' but will check the passenger one too.

 

Thanks

Found it but doesn't look like any of these? Unless anyone knows otherwise?

My fuse box that holds the radio fuse is in the passenger foot-well, but the layout is different from yours though.

 

I plan on putting a load of these (https://www.amazon.co.uk/dp/B084VLKNSV?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1) into the fuseboard to feed the different additions* as the current draw on the audio line is too much and the fuse keeps blowing.

My bodging has the radio coming on but the touchscreen doesn't work - a new fuse allows it to work for a while but then it blows and it stops again.

 

*

HUD speedometer

Dashcam

2x double USB sockets

2nd 'Cigarette lighter' socket

A mirror auto-retraction module (which has tipped it over the line 😞 )

 

 

This is in addition to the mods that have happened to it over the years and have left the wiring behind the dash somewhat haphazard.

Ive just remembered. I had to replace the fuse for the radio when I changed head units. It was in the engine bay fuse box. I cant remember which one but Im 99% sure its in there

Thanks, when I have some time I will go through all the fuses to be sure before ringing Northstar

Hello jason i have atatched 2 photos show fuse box in engine bay have marked red the fuses you need to look at i hope this helps.

Hi all, thanks for the advice. So I have been out and bought a digital volt meter, set it to continuity check and tested every single fuse in all 4 fuse boxes, all are OK. I have just pulled the radio out to look for another fuse, only one back there and that is also OK. 

 

Cant explain why the radio is totally dead if all the fuses are intact.

 

Might have to ask Northstar to see if they have any ideas.

 

Not sure what else to do 🤷🏻‍♂️

Have you checked that there are volts rather than just check the fuses aren't blown?