NOTE: A = wired connection; D = high speed CAN bus; F = radio frequency transmission; N = medium speed CAN bus; T = coaxial; AA = Webasto bus 'W'
| Pos. | spare part no | Name |
| 1 | - | Battery |
| 2 | - | Fuse 17, BJB |
| 3 | - | Fuse 27, CJB |
| 4 | - | ATC module |
| 5 | - | CJB |
| 6 | - | Engine control module (ECM) |
| 7 | - | Outdoor temperature sensor |
| 8 | - | Additional fuel pump |
| 9 | - | Additional coolant pump |
| 10 | - | FFBH receiver (vehicles from model year 2009) |
| 11 | - | Antenna matching block |
| 12 | - | Auxiliary fuel-fired heater |
| 13 | - | Antenna FFBH/DAB (vehicles from model year 2009) |
| 14 | - | Fuse 32, BJB |
| 15 | - | Fuse FA5, RJB |
| 16 | - | Remote control FFBH (vehicles from model year 2009) |
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