smurf

Have you tried hot spotting your phone and using WiFi? If you are trying to use FM make sure you have wired up the power on signal from the head unit for the antenna signal booster, or the radio signal will be terrible. That shouldn't affect the DAB aerial you have installed, though. DAB really doesn't like crap aerials, so make sure what you have installed is of a good quality and has been grounded to bare metal on the body of the car.

There should be a sub code to go with that fault code that will allow better diagnosis of the issue. I believe MG1 on the Alphard doesn't have any temperature monitoring, so that is why it is showing zero. Which high water temp are you referring to? I can see a water temp of 83 Deg C, which is perfectly reasonable for an engine cooling system.

I was at a festival recently with the same issue. Rural location, good signal strength, but mostly no chance of any data transfer and calls wouldn't connect. We managed ok without, but the only solution that would have worked there would have to have been satellite based as the local cell towers were no doubt completely overwhelmed by thousands of users all trying to get connected at the same time. No mobile based dongle would have been of use there.

You presumably have a Campervanco conversion. As you have correctly pointed out, the battery on the seat is the 12V battery to power engine related 12V systems. The battery in the centre console is your leisure battery. There is some information on the battery, and where to get one from, in this thread.

Off the top of my head, I don't know. It goes right from the back all the way to level with the windscreen. It faces upwards. There is a photo in my linked post.

As you are in Stirling, if you are potentially looking to do a bit of preventative maintenance on the hybrid system then look up Hybrid Battery Repair of Glasgow. They can do the thermal paste replacement on the IGBTs, amongst other hybrid related work. I haven't used them personally, but they seem to get good reviews.

ATH10 does have a 4WD light, but it purpose is to indicate a fault, as you state. The hybrid display on the stereo head unit shows the rear motor in use, but there is nothing similar on the ATH20.

The rear motor is just a normal part of the hybrid drive. Every time you accelerate, the rear motor will be used to get as much hybrid assistance as possible. If it wasn't working you would be getting warning lights on the dash.

There are no left hand drive headlamps, but luckily the lights don't lift up on the left. They have a flat beam and only light straight ahead at the same height. How you would explain that to the Swiss authorities I, do not know.

1. Across the car running under the front seats. 2. The cooling fan is under the front passenger seat. 3. 12V battery is in the rear of the centre console.

Yes, they are under the air filter housing

I checked the manual the other day. It uses the camera and the head unit. There are no sensors anywhere for the lane assist.

It uses the cameras, but I think if you have removed the original stereo it won't work anymore.

From looking at the part catalogue, it appears to be hidden in the dash attached to the heater unit.

I haven't got any specific advice, but I have heard good things about using a vacuum pump to remove all the air from the coolant system first, and then coolant is admitted. With no air to get trapped there should be no need to bleed it. This is a kit I found on eBay, but I have no personal experience of using one LINK