There are two versions of the brakes control units. Bosch 8,2 and Bosch 9,0.
Bosch8,2 came for cars up to 06.2012 year.
Bosch9,0 came for cars since 06.2012 year.
The versions has some differences in socket wiring and codings:
There is possible to retrofit ESP9.0 instead of ESP8.2.
Some guys in Russia retrofit ESP9.0 instead of ABS8.2.
But I am not sure is the 8.2 could be retrofitted instead of 9.0 because of possible incompatibility with wheels sensors.
Here is information which I collected and systematized concerning Polo's ABS with ESP coding calculating. The sourses were Polo hatches an polo sedans in Russia. extra Skoda Fabia
For simple ABS this could be helpful also, but as a rule some bytes in simple ABS have values
00
This coding description is not a final version, If you will find a differences or mistakes please write I will correct it. At least the variants for right-side steering wheel should be added
ESP8,2
0 Byte, define the model of the car and the body type:
21 – Polo hatch;
51 – Polo sedan;
41– Fabia;
1 Byte, define the model of the car too:
01– Fabia;
02 – Polo;
2 Byte, define the brake types:
- 24 – if the front 256mm disk and rear 200mm drum
28 – if the front 256mm disk and rear 232mm disk
44 – if the front 288mm disk and rear 200mm drum
48 – if the front 288mm disk and rear 232mm disk
3 Byte, unknown.
DB – Fabia;
C2 – Polo
4 Byte, transmition type:
41 – automatic;
21 manual
5 Byte, depends on 13th digit of the VIN (see below)
6 Byte, unknown .
00
7 Byte, depends on 14th digit of the VIN (see below)
8 Byte, binary inverted value of the 0 Byte:
84 – Polo hatch;
8A – Polo sedan;
82– Fabia
9 Byte, depends on 15th digit of the VIN (see below)
10 Byte, binary inverted value of the 2 Byte: (
24/
14/
22/
12)
11 Byte, depends on 16th digit of the VIN (see below)
12 Byte, binary inverted value of the 4 Byte: (
82/
84)
13 Byte, depends on 17th digit of the VIN (see below)
14 Byte, binary inverted value of the 6 Byte:
00
15 Byte, define the engine type and steering wheel side:
- 40 – BXW/CGGB/CBZB/CGPA/CBZA/CHFA/CFNA left-side steering wheel
42 – CAYB left-side steering wheel
52 – CFWA left-side steering wheel
16 Byte, define additional functions:
10 – default
- Bit 0 – Hill Hold Control (HHC) activation
Bit 1 – Tire Pressure Monitoring (RKA) activation
Bit 2 – XDS activation
17 Byte, unknown
00
ESP9,0
0 Byte, define the model of the car and the body type:
21 – Polo hatch;
51 – Polo sedan;
41 – Fabia
1 Byte, define the model of the car too:
DD – Polo;
DC – Fabia
2 Byte, define the brake types:
- 2C – if the front 256mm disk and rear 200mm drum
28 – if the front 256mm disk and rear 232mm disk
44 – if the front 288mm disk and rear 200mm drum
48 – if the front 288mm disk and rear 232mm disk
68 – if the front 310mm disk and rear 232mm disk
78 – if the front 310mm disk and rear 254mm disk
3 Byte, unknown.
85 - Polo hatch
64 – Polo sedan;
7D – Fabia
4 Byte, transmition type:
41 – automatic;
21 manual
5 Byte, depends on 13th digit of the VIN (see below)
6 Byte, unknown .
00 - Polo hatch;
07 - Polo sedan;
08 - Fabia
7 Byte, depends on 14th digit of the VIN (see below)
8 Byte, binary inverted value of the 0 Byte:
84 – Polo hatch;
8A – Polo sedan;
82– Fabia
9 Byte, depends on 15th digit of the VIN (see below)
10 Byte, binary inverted value of the 2 Byte: (
34/
14/
22/
12/
16/
1E)
11 Byte, depends on 16th digit of the VIN (see below)
12 Byte, binary inverted value of the 4 Byte: (
82/
84)
13 Byte, depends on 17th digit of the VIN (see below)
14 Byte, binary inverted value of the 6 Byte: (
00/
E0/
10)
15 Byte, define the engine type and steering wheel side:
- 40 – BXW/CGGB/CBZB/CGPA/CBZA/CHFA/CFNA left-side steering wheel and not sure below for this byte
42 – CAYB left-side steering wheel52 – CFWA left-side steering wheel
16 Byte, define additional functions:
- 08 – default with ESP-button deactivates ASR only
14 – default with ESP-button deactivates ESC fully- Bit 0 – Hill Hold Control (HHC)activation
17 Byte, define additional functions:
00 – default
Bit 0 – Tire Pressure Monitoring (RKA) activation
Bit 2 – XDS activation
PS This post does not have the copyrights
and could be shared and reposted freely
