• 54.00 General13
• 54.10 Battery, power supply, voltage converter25
• 54.15 Fuse and relay box5
• 54.18 Cable harnesses7
• 54.20 Module box9
• 54.21 Control units / basic modules22
• 54.22 Diagnostic test coupling/diagnostic socket19
• 54.25 Switches9
• 54.30 Instrument cluster, display instruments, hazard warning device58
• 54.35 Signaling system11
• 54.61 Speed recorder, trip recorder, taximeter24
• 54.65 Parking assist8