Extension kit for retrofitting the Fley Ray channel to retrofit one of the following equipment: 235 Active Park Assist This wiring kit is only required if one of the following equipment is not available: 233 Distance Control Plus 239 Distance Control Pro 266 Distance Control Plus side support 459 Steel suspension with adjustable damping 489 AIRMATIC Dual Control/semi-active air suspension M016 High-performance engine M177 V8 petrol engine M177 - AMG M276 V6 petrol engine M276 M30 3.0-litre displacement M40 4.0-litre displacement Scope of delivery: Cable set Notes: In addition, the EZS (electronic ignition and start switch) must be replaced in a Mercedes workshop and commissioning must be carried out