CITO
OBD - On Board Diagnosis
BS - Brake Control System
FE - Vehicle electronics
FPS - Flexibly Programmed Controller
FR - Driving Control
HLK - Heating, ventilation, cooling
MR - Engine Control
MTS - Modular Door Control System
NR/NR1 - Level control
ZHE(W) - Auxiliary Heating (Webasto)
ZHE(E) - Auxiliary Heating (Eberspächer)