Mercedes-Benz SL 63 AMG (232) RX1.2 (ML2) ASR Exhaust Flap Control

ASR flap control RX1.2 – For Mercedes models with two electric exhaust flaps (type ML2)

Suitable for: Mercedes SL 43, SL 55, SL 63 AMG (R232)

The ASR RX1.2 exhaust flap control unit allows you to manually control the exhaust flaps of your Mercedes. The module is plug-and-play, inserted directly between the actuators in the rear silencer area – without any modifications to the vehicle wiring or CAN bus.

With a high-quality remote control, you can decide on the sound of your vehicle at any time and have full control over the sound, regardless of the factory driving modes.

Your advantages at a glance

• Control independent of driving modes
  You determine the sound – not the selected driving profile.

• True serial mode
  The module remains completely deactivated, even after restarting the vehicle. Ideal for workshops, service centers, or vehicle inspections.

• Freely programmable start mode
  Flexibly define how your vehicle sounds when starting – last state or a specific mode.

• No interference with the CAN bus
  No risks to other control units and no limitations due to future software updates.

• Plug & Play – no cable damage
  Original connectors, reversible and completely traceless. No wire taps, no modification of the factory wiring.

Start mode function

By default, the device saves the last selected mode and restores it when the vehicle is started.
Alternatively, a fixed start mode can be set:

• Last state: Press the Sport button five times within 5 seconds

• Fixed mode: Press and hold the desired button for approximately 10 seconds.

• To confirm, open and close the flaps five times.

Assembly

Installation is simple and vehicle-specific. For optimal reception, mounting in the trunk is recommended. The cable lengths are designed accordingly.

Other features

• Reversible at any time without leaving any trace

• No modification to the standard CAN bus

• No error messages in the error log

• Continuous and safe operation

• Brand quality – Made in Germany

Handheld transmitter

• High-quality, elegant look

• Brushed stainless steel front

• Long range

Notes

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

• For racing use only

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

• Installation at your own risk

• No liability is assumed for failure to heed these instructions.