Dashboard coding seems off

The 07 is pretty easy to explain. Take a look at the "+" in front of each line.
So if you have 07 as the first two numbers then you have:
1) Brake pad warning (+01)
2) Seatbelt warning (+02)
3) Washer fluid warning (+04)

Since it's "+" add all numbers together until you get the number you're looking for.

01+02+04 = 07

For the cylinder thing please post another screenshot of the description.

Ok i found the problem.
The description is not complete!

Here's a full ECU17 list:

Control unit coding

??xxx: additional equipment (until MY 2003)

+00 - no extra options
+01 - brake pad wear indicator
+02 - Seat belt warning
+04 - wiper water level warning indicator
+16 - Navigation / Radio

??xxx: additional equipment (from MY 2004)

+00 - no extra options
+01 - brake pad wear indicator
+02 - Seat belt warning indicator (Version 3)
+04 - wiper water level warning indicator
+08 - Seat Belt Warning Indicator (Version 2 - North America)
+16 - Navigation / Radio

Note: If both +02 and +08 are activated, the safety belt warning display will run, for the driver and front passenger via CAN (from MY 2004).

xx?xx: country selection

1 - Europe (EU)
2 - USA (US)
3 - Canada (CDN)
4 - Great Britain (GB)
5 - Japan (JP)
6 - Saudi Arabia (SA)
7 - Australia (AUS)

xxx?x: Engine variant (service interval) (until MY 1999)

4 - 4 cylinder
5 - 5 cylinder
6 - 6 cylinder

xxx?x: Engine variant (service interval) (from MY 2000)

0 - Fixed interval without oil level / temperature sender (QG0)
1 - Flexible interval with oil level / temperature sender (QG1)
2 - Fixed interval with oil level / temperature sender (QG2)
3 - Vehicles without Service Interval Display (USA, Canada)

xxxx?: Coding number for distance pulse number

1 - 4358 (1.4l / 55kW AHW / AKQ with shift gearbox)
2 - 3538 (all other engine codes or automatic transmissions)
3 - 4146 (1.6l / 74-77kW and 1.9l / 50kW-SDI with shift transmission)
4 - 3648 (unknown)

xxxx?: Coding number for distance pulse number (from MY 2002)

1 - 4345 (1.4l / 55kW with manual transmission)
2 - 3528 (all other engine / gearbox variants)
3 - 4134 (1.6l / 74-77kW and 1.9l / 50kW-SDI with shift gearbox)
4 - 3648 (all 5-speed automatic transmissions)
4 - 3648 (all 6-speed manual transmission)
4 - 3648 (1.9l / 81kW TDI with manual gearbox 02M)

According to your coding your car is MY 2000 or later and then the 3 is correct.