PetrolDave

Are you 100% sure that your 2008 Octavia PD170 has a DPF?

My 2p worth .... service - yes. cambelt - no, too risky for me to try without the proper tools. waterpump - probably but only IF it can be done without disturbing the cambelt.

Some cars have been held in a lot for well OVER a year - when production exceeds demand it's happened. Have you not seen the pictures of a large airfield near Huntingdon absolutely full of unregistered cars a few years ago? Conversely you can get a 2017 Model Year car on a 16 plate - because Model Year changes in early Summer, so a newly built car registered in August can be for the next Model Year.

If your sat nav has a USB connector on it then it will NOT need 12V (no USB connectors have ever used 12V), all you need is a USB-C to USB lead.

Looks like you have some fuse checking and wire tracing to do - don't ignore the 49493 no communication with instrument cluster as this plays an important role in the immobiliser to ECU communication.

Not MADE, first registered - there have been many examples over the years of cars sitting in a holding lot for months, sometimes over a year, before being registered.

If you have a spare key, try that. Fault finding this over the internet isn't possible, you'll need to get a fault code scan done (I always suggest using VCDS but other diagnostic tools are available) which will give information about why the immobiliser is unhappy.

Starting then turning off after a few seconds = immobiliser.

If you use micro SD cards how about this USB-C to micro SD adapter from Amazon? USB-C to micro SD adapter

It's a trunk if you speak American English, otherwise it's a boot. BTW there is a tweak to delay the boot locking, see Enable boot lid lock delay - it's saved me from locking the keys in the boot a couple of times!

What stuff did you do that you should not have? Some things can only be reset by a factory connection (e.g. where a configuration file has been deleted/overwritten) but others can be sorted out by reversing the coding/adaptation changes and possibly running some recalibration functions - to know which applies here we need to know exactly what you did.

Why do you think it's still picking up TMC when TMC is clearly crossed out?

But TMC is crossed out, which suggest it isn't picking up TMC? Don't confuse TA/TP with TMC. What changed on the car just before TMC stopped working?

At a guess, because the tailgate is not fully latched closed so the operation (or lack of) of the hall sensor is not as important. Either way, that's the only fault being shown so you'll need to fix that.

Maybe that's because nobody here has any feedback? ... because we don't agree with the concept of "ambulance chasing"?

Like it says "Hall sensor in motor 2 for rear hatch Signal error" so either the wiring to the sensor has a break, the hall sensor has been knocked/moved or the hall sensor is faulty. Time to find where motor 2 is in the rear hatch and do some basic fault finding now that OBD11 has pointed you to the problem area.

Is your FM station reception OK, and with good RDS (station information) OK? TMC is transmitted using extra signalling on some FM radio transmissions.

If you haven't suffered any financial loss then you aren't entitled to any compensation for the loss that you haven't had - to claim otherwise could be taken as fraud. When have any lawyers been trustworthy?

Hundreds of us have made changes to the setup of our cars using VCDS et al, I've been making changes to my VAG vehicles since 2003 and never had any comment or problem from dealers regarding affecting the warranty - I believe that others have the same experience. What's the legal position? Who knows as AFAIK there has not been a test case.

Following that link and reading the table it says that the Octavia 3 dates for which it is OK are from 12/10 to 02/13? I didn't think the Octavia 3 was introduced until 2013? In the UK the MOT test will check that the headlamps are Type Approved for use with LED bulbs as well as Halogen, something that may still make use of these in the UK an MOT failure?

I have a 2015 Octavia with a MIB1 Amundsen, I update the maps every 6 months so I'm currently running the 2020/2021 maps - and will update to the 2021 maps as soon as they become available.

Be patient, @pab567will be along soon enough.

Sounds to be like a low battery voltage problem not actually a brake problem. When I lived in Southampton I took our VAG vehicles (SWMBOs Skoda Fabia and my Audi RS4) to Abtech at Totton - was very happy with the prices, their honesty and their work.

Where did you get the batteries from? The remotes in our cars seem to be very sensitive to the condition of the batteries, it seems only fresh new batteries of reputable manufacture have a sensible lifetime in the remotes.

Several owners thought a catch can would be the "cure" for the 'alleged carbon problem' on my previous car (Audi B7 RS4) but all were disappointed with how little oil appeared in the catch can. BTW I say 'alleged carbon problem' because in all cases that reported back to owners websites the loss of power was traced to vacuum leaks, and when I sold mine after 10 years with 88,000 miles on the clock it had just been on a respected dyno and was still making over manufacturers spec bhp.