Mercedes-Benz S63 AMG (223) RX1.2 (ML2) ASR Exhaust Flap Control

SR Flap Control RX1.2 – For Mercedes models with two electric exhaust flaps

More control, more precision, more sound: The ASR RX1.2 exhaust flap control allows you to manually control the exhaust flaps of your Mercedes – regardless of driving modes or software interventions. For a direct, authentic sound experience at the touch of a button.

Suitable for the following models (series 223):

• S500

• S580

• S680

• S63 e

The module is plugged directly between the actuators of the exhaust flaps in the rear silencer area – completely without any modifications to the CAN bus or the original vehicle wiring.

Your advantages at a glance

• Full manual control: Control via high-quality hand-held transmitter – regardless of the selected driving profile.

• True factory mode: Module can be completely deactivated, even after restarting the vehicle. Ideal for workshops, service centers, or vehicle inspections.

• Freely programmable start mode: Define how your vehicle should start sounding – last state or a defined mode.

• No software dependency: Functionality is retained even after vehicle updates.

• Reversible without leaving a trace: No damage to cables, no errors in the fault memory.

Assembly

Installation is plug-and-play using vehicle-specific connectors. For optimal reception, mounting in the trunk is recommended; the cable lengths are designed accordingly.

Handheld transmitter

• High-quality look with brushed stainless steel front

• Long range

• Compact, robust design

The ASR RX1.2 was specifically developed for electric flap systems and offers durable, reliable operation. Made in Germany – quality you can depend on.

Notes

• Not approved for road use (German Road Traffic Regulations).

• Exclusively for use in racing.

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

• Installation at your own risk; no liability accepted for failure to follow the instructions.