Mercedes C-Class (205) Facelift RX1.2 (ML1) ASR Exhaust Flap Control

ASR Flap Control RX1.2 – For Mercedes C200 & C300 (205) Facelift

Experience full control over the sound of your Mercedes – with the ASR flap control RX1.2 .
The module connects directly to the actuator of the exhaust flap in the rear silencer area and allows you to manually control the exhaust flaps via a remote control . This lets you decide when your vehicle should sound subtle or sporty.

Advantages at a glance

• Regardless of Drive Select – you determine the sound, not the driving profile.

• True series mode – Deactivated module remains off even after vehicle restart – ideal for workshops, service or vehicle inspections.

• Freely programmable start mode – Define for yourself how your vehicle sounds when starting.

• No interference with the CAN bus – no impact on other control units or software updates.

• Plug & Play Installation – Vehicle-specific original connectors, no cutting or soldering required.

• Fully reversible at any time – without leaving any traces or error messages.

Operating modes

• Startup mode: Choose whether the last state or a fixed mode is activated at startup.

• Easy programming: Mode changes and initial configuration via the handheld transmitter in seconds.

Handheld transmitter

• High-quality look with brushed stainless steel front

• Long range and reliable signal transmission

Assembly

Installation is simple plug and play . Thanks to vehicle-specific connectors, the module can be connected directly to the exhaust flaps.
Recommended position: trunk , for best reception and protection from the elements.

Technical features

• No error message in memory

• No modifications to the original wiring harness

• Made in Germany – durable, tested quality

Notes

• Not permitted under the German Road Traffic Regulations (StVO).

• For racing use only

• Installation is at your own risk.

• The flaps should not be completely closed at full load.