PetrolDave

Try Googling mixing tyres on the same axle... you find lots of hits, this quote is from Protyre

GRU is the colour code for Urban Grey.

It's not a regulation thing, just something that two very experienced former racing drivers (F1 & Group C sports cars) who became ride & handling experts for a well known sports car manufacturer said to everyone prepared to listen to drivers with their level of skill.

Ross-Tech are negotiating with VAG to add SFD unlock into VCDS, they've jumped through all the hoops and paid VAG a princely sum so now it's down to VAG's glacially slow procedures to make it happen. You don't need to keep power applied when changing the 12V battery on an ICE version (can't comment on iV versions), the errors that will appear when the new battery is applied will clear after a short drive. If the thought of errors appearing upsets you then by all means use one the easily available backup leads.

Maybe the firmware update has scrambled the FEC code that unlocks AndroidAuto? Was AA unlocked by a dealer applying the correct unlock code, or by someone else doing a 'hack'? If a hack then it's possible the firmware update has caused the hack to be lost - which is why I haven't updated my MIB2 as I had CarPlay unlocked by the 'hack' method.

Tried a different USB cable? Some are power only.

If you can find the car data sticker and use an online decoder that will confirm whether or not they are fitted to your car.

When you fit the spare wheel there will be mismatched wheels (one alloy and one steel) on that axle, this is why it has a 50mph sticker - it's not the tyre that's the issue it's that it's not the same as the tyre/wheel on the other end of that axle which will make the handling less predictable.

You can't add maps to an infotainment that doesn't have the software and hardware (GPS antenna), you probably have a Swing.

Are deadlocking and alarm fitted to your car, not all markets have them as standard.

Do you have a NAV button? If you do then I "think" that's a MIB2 Amundsen? An Amundsen needs the correct maps on a Skoda/VW SD card (NOT a normal SD card) which is inserted all the time. You can add a reversing camera, there are two versions - a basic one which just shows the view when reversing and a high spec one which shows trajectory lines and comes with a CAN bus connected module.

.. even on the FWD versions.

The first link is a complete wheel AND tyre set, so it comes with directional tyres which must be fitted on the correct side.

I've had 2 Octavias with start/stop, first one was on original battery when sold at 7 years old and second one is still on original battery at 8 years old - start/stop worked/works correctly on both.

VCDS keeps files that record both coding and adaptation changes , CodingLog.csv and AdpLog.csv in C:\Ross-Tech\VCDS\Debug - open those in Notepad and reverse the changes you've just made.

The one in your hand only has 2 dots? Dashboard dimming is done by a sensor in the dashboard itself, not by one on the windscreen. I think you need to get someone do do a scan with VCDS, OBDeleven or similar to solve this question - that will show what is actually fitted to your car. My feeling is that the scan will show a module 20...

There are usually several recommended tyre pressures shown on the fuel flap for different loads (one person, 3 people, three people plus luggage IIRC). @mccririck Which recommended tyre pressure were you comparing against?

I'm trying to remember what the basic #20 camera I had in my previous Octavia looked like and I'm 60% it looks like your picture. That gave HBA (High Beam Assist i.e. auto dipping headlights).

So module 09 is seeing the ignition switched terminal as unswitched. I would check against a wiring diagram where module 09 gets its ignition switched feed(s) (there may be more than 1) from and get tracing with a multimeter.

It's not only a rain sensor it's also the light sensor for auto lights. So you can have an auto lights only sensor, or a combined auto lights and wipers sensor (and there are 2 versions of that, one which allows auto window closing when it rains and one that doesn't) - confusing it most certainly is! Do you have auto lights?

Me too from the part numbers.

It depends on whether yours is an early 2015 build or a late one, early builds have a MIB1 infotainment system which doesn't support CarPlay or Android Auto - my previous 15 reg Octavia had a MIB1 - later 2015 builds have a MIB2 which does support CarPlay and Android Auto.

When start/stop doesn't work it's always worth checking the infotainment screen that gives an explanation why it isn't working - things like aircon, electrical load, etc.

The advice re timing belt is much longer than 5 years, so no you do not need to replace the timing belt unless you have done over 100,000km. Water pump changing on the 1.4/1.5 engines doesn't have a schedule, just replace when faulty or the belt is sowing signs of wear when visually inspected.

Firmware won't solve it, but there are people and tools that can enable some additional features (such as CarPlay & AndroidAuto) - I'm not one of those people!