MAIN FEATURES
Mercedes steering wheel control and MOST amplifier interface designed to retain OEM steering wheel functions when installing an aftermarket head unit. This Quadlock Multilead adapter ensures seamless CAN/MOST integration while maintaining key factory signals and audio system communication.
Features:
- Steering wheel control retention: Preserves original Mercedes steering wheel buttons with aftermarket radios.
- MOST integration: Supports OEM fiber optic sound system (MOST25) with amplifier communication.
- Quadlock connection: Direct 40-pin OEM-style plug for clean installation.
- Multilead RCA output: Supports aftermarket head unit audio input (front pre-out).
- CAN bus support: Provides ignition, lighting, reverse, speed, and ground signals.
- PDC & warning tones: Retains parking sensors and acoustic alerts (vehicle dependent).
- Plug-and-play design: Reduces wiring modification for professional installation.
VEHICLE COMPATIBILITY LIST
- Mercedes A-Class: W169 / C169 (2004–2012)
- Mercedes B-Class: T245 (2005–2011)
- Mercedes C-Class: W203 / S203 / CL203 (2004–2007)
- Mercedes CLK-Class: W209 (2005–2010)
- Mercedes GL-Class: X164 (2006–2012)
- Mercedes M / ML-Class: W164 (2005–2011)
- Mercedes R-Class: W251 (2005–2010)
Note: Compatibility depends on factory audio system (Audio 20 / Audio 50 / COMAND / MOST25). Not compatible with all OEM variations.
Retained functions
- Steering wheel controls (volume, track, mode depending on head unit)
- OEM MOST amplifier audio support (limited features)
- CAN signals: ignition, lighting, reverse, speed
- PDC / parking tones (vehicle dependent)
Included in the kit
- Mercedes 40-pin Quadlock CAN interface
- MOST25 fiber optic integration support
- RCA audio output leads (front pre-out)
- Multilead steering control cable
Installation notes
- Check OEM system type before installation (MOST25 / Audio 20 / COMAND)
- Fader function not supported in MOST systems
- Some vehicles may require fiber optic loop or removal of unused modules
- DIP switch configuration required per head unit brand
- Professional installation strongly recommended
- Always test all functions before final assembly
Disclaimers
- Features may vary depending on vehicle model, year, and OEM system
- Aftermarket head unit compatibility affects steering button mapping
- Noise interference may occur in some installations
- Output current limit: 250 mA max
- Modifications to wiring may void product warranty
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
MAIN FEATURES
Mercedes steering wheel control and MOST amplifier interface designed to retain OEM steering wheel functions when installing an aftermarket head unit. This Quadlock Multilead adapter ensures seamless CAN/MOST integration while maintaining key factory signals and audio system communication.
Features:
- Steering wheel control retention: Preserves original Mercedes steering wheel buttons with aftermarket radios.
- MOST integration: Supports OEM fiber optic sound system (MOST25) with amplifier communication.
- Quadlock connection: Direct 40-pin OEM-style plug for clean installation.
- Multilead RCA output: Supports aftermarket head unit audio input (front pre-out).
- CAN bus support: Provides ignition, lighting, reverse, speed, and ground signals.
- PDC & warning tones: Retains parking sensors and acoustic alerts (vehicle dependent).
- Plug-and-play design: Reduces wiring modification for professional installation.
VEHICLE COMPATIBILITY LIST
- Mercedes A-Class: W169 / C169 (2004–2012)
- Mercedes B-Class: T245 (2005–2011)
- Mercedes C-Class: W203 / S203 / CL203 (2004–2007)
- Mercedes CLK-Class: W209 (2005–2010)
- Mercedes GL-Class: X164 (2006–2012)
- Mercedes M / ML-Class: W164 (2005–2011)
- Mercedes R-Class: W251 (2005–2010)
Note: Compatibility depends on factory audio system (Audio 20 / Audio 50 / COMAND / MOST25). Not compatible with all OEM variations.
Retained functions
- Steering wheel controls (volume, track, mode depending on head unit)
- OEM MOST amplifier audio support (limited features)
- CAN signals: ignition, lighting, reverse, speed
- PDC / parking tones (vehicle dependent)
Included in the kit
- Mercedes 40-pin Quadlock CAN interface
- MOST25 fiber optic integration support
- RCA audio output leads (front pre-out)
- Multilead steering control cable
Installation notes
- Check OEM system type before installation (MOST25 / Audio 20 / COMAND)
- Fader function not supported in MOST systems
- Some vehicles may require fiber optic loop or removal of unused modules
- DIP switch configuration required per head unit brand
- Professional installation strongly recommended
- Always test all functions before final assembly
Disclaimers
- Features may vary depending on vehicle model, year, and OEM system
- Aftermarket head unit compatibility affects steering button mapping
- Noise interference may occur in some installations
- Output current limit: 250 mA max
- Modifications to wiring may void product warranty
MAIN FEATURES
Mercedes steering wheel control and MOST amplifier interface designed to retain OEM steering wheel functions when installing an aftermarket head unit. This Quadlock Multilead adapter ensures seamless CAN/MOST integration while maintaining key factory signals and audio system communication.
Features:
- Steering wheel control retention: Preserves original Mercedes steering wheel buttons with aftermarket radios.
- MOST integration: Supports OEM fiber optic sound system (MOST25) with amplifier communication.
- Quadlock connection: Direct 40-pin OEM-style plug for clean installation.
- Multilead RCA output: Supports aftermarket head unit audio input (front pre-out).
- CAN bus support: Provides ignition, lighting, reverse, speed, and ground signals.
- PDC & warning tones: Retains parking sensors and acoustic alerts (vehicle dependent).
- Plug-and-play design: Reduces wiring modification for professional installation.
VEHICLE COMPATIBILITY LIST
- Mercedes A-Class: W169 / C169 (2004–2012)
- Mercedes B-Class: T245 (2005–2011)
- Mercedes C-Class: W203 / S203 / CL203 (2004–2007)
- Mercedes CLK-Class: W209 (2005–2010)
- Mercedes GL-Class: X164 (2006–2012)
- Mercedes M / ML-Class: W164 (2005–2011)
- Mercedes R-Class: W251 (2005–2010)
Note: Compatibility depends on factory audio system (Audio 20 / Audio 50 / COMAND / MOST25). Not compatible with all OEM variations.
Retained functions
- Steering wheel controls (volume, track, mode depending on head unit)
- OEM MOST amplifier audio support (limited features)
- CAN signals: ignition, lighting, reverse, speed
- PDC / parking tones (vehicle dependent)
Included in the kit
- Mercedes 40-pin Quadlock CAN interface
- MOST25 fiber optic integration support
- RCA audio output leads (front pre-out)
- Multilead steering control cable
Installation notes
- Check OEM system type before installation (MOST25 / Audio 20 / COMAND)
- Fader function not supported in MOST systems
- Some vehicles may require fiber optic loop or removal of unused modules
- DIP switch configuration required per head unit brand
- Professional installation strongly recommended
- Always test all functions before final assembly
Disclaimers
- Features may vary depending on vehicle model, year, and OEM system
- Aftermarket head unit compatibility affects steering button mapping
- Noise interference may occur in some installations
- Output current limit: 250 mA max
- Modifications to wiring may void product warranty
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
