PetrolDave

Continual random rebooting.

Low Rolling Resistance is achieved by a harder compound which has less grip. Personally I studiously avoid any tyre labelled as "eco" because I'd rather have grip and protect my life and property.

I think it's the first place to check.

The key word there is option, that's the price DIFFERENCE between the base spec radio and the Columbus upgrade not the full price of the Columbus - so many people make this mistake.

Look at the serial number on the cable, maybe even post it here (Ross-Tech will ask you to do that).

AFAIK Skoda don't publish the speed of the Diagnostic CAN bus, you'll have to use the trial and error method.

My 2016 Octavia stays in ECO or D mode as I select using the Individual Mode option.

The CAN bus speed depends on which of the CAN busses you mean - there are many e.g. Powertrain CAN, Infotainment CAN, Comfort CAN, Extended CAN, ... What do you mean by DBC file?

Please share ...

Diesel glow plugs not turning on? Checked the fuses etc?

Be aware that as you have a 2015 model it's a MIB1 Amundsen and that the latest maps available are 2020 maps - no newer ones will be available.

Folding mirrors were only standard on some models and years.

We know you have a 2017 Octavia, but not what engine it has???

Checked the relevant fuse? If that's OK then as said I suspect the water may have caused the motor to rust internally and fail.

The washer supply runs through the motor and it's not unknown for this to cause the motor to fail - I had it happen on my previous car.

My understanding is that VAG consider anything less than a litre every 1000 miles to be "normal". That's what was said to many other owners of my previous car (an RS4) when they complained of a litre every 2000 miles or so.

The suffix letter is the version number, generally the higher the letter the newer it is. There are at least 4 sellers of the G version, take your pick...

.. or a hair dryer?

That's what I normally do, but I also like 'belt & braces' so I have 2 Skoda SD cards!

The navigation database part number 5E0051236E is for a MIB1 Amunsen map database on an SD card - you should find this SD card in one of the SD card slots in the glovebox unit. With an Amundsen you must use a genuine SD/VW SD card as they have a special 'CID' so any other SD card won't be recognised as a map database. Another SD card is easy to find at much less than the dealer price, just search on an auction site for the part number 5E0051236 and get the latest one (there's currently a G version on eBay).

... and make sure to request that they activate Android Auto too.

Proximity spreads the fire, but the key word is "flamethrower" which strongly suggests some Li based batteries aggravated the fire.

Further digging into the circuit diagrams show 3 headlight options - Halogen, Bi-Xenon and Bi-Xenon with LED running lights. Choosing the right one shows the pinout is correct! Then looking into the adaptation channels of the BCM shows why a failed front sidelight is reported as rear left turn light - Skoda have got the dataset wrong and the output controlling the front sidelight is attached to Leuchte channels for the rear turn light!

I have Canton in my 2016 L&K hatch, the sub is completely within the box to the left of the boot leaving the spare wheel well completely empty - where I have a space saver spare, tools, and miscellaneous 'stuff'.

A recent thread by @toot showed the cost on a rapid charger as 79p/kWh, assuming 4miles/kWh that works out at 19.75p/mile. I average 45mpg in my 2016 1.8TSI Octavia and I most recently paid 150.7p/litre that works out at 15.15p/mile. So your comment is absolutely true when charging overnight at home (at 7p/kWh) but most certainly NOT true when having/choosing to use rapid chargers when away from home.