Mercedes GLB 250 (X247) RX1.2 (ML1) ASR Exhaust Flap Control

ASR flap control RX1.2 – full control over the sound of your vehicle

Compatible with:
Mercedes-Benz GLB 35 AMG (X247) , GLB 250

Experience your vehicle's sound in a completely new way – with the ASR RX1.2 flap control system .
The module is plugged directly into the actuator of the exhaust flap in the rear silencer area – without any modification to the vehicle software. This gives you full control over your exhaust flaps at all times – conveniently via remote control.

Your advantages at a glance

• Manual control independent of Drive Select
  You determine the sound – not the driving profile.

• True stock mode (disabled) even after vehicle start
  Ideal for workshop, service or TÜV visits.

• Freely programmable start mode
  Choose the sound your vehicle starts with.

• No interference with the CAN bus
  Safe for all control units – regardless of software updates.

• Plug & Play installation with original connectors
  No cable cutting, no power thieves, no error messages.

Assembly

Installation is plug & play using vehicle-specific connectors – quick, clean and reversible without leaving any residue.
No modifications to the original wiring harness are required.

Handheld transmitter

• High-quality look with brushed stainless steel front

• Long range and reliable signal transmission

• Precise control of the exhaust flaps at the touch of a button

Technical Highlights

• Reversible without leaving any trace

• No entry in the error memory

• Stable and continuous operation

• Designed for electric flap systems

• Made in Germany – Premium quality from ASR

Notes

• Not approved under the German Road Traffic Act (StVZO).

• Intended for use in motorsport only

• Do not keep the flaps completely closed during full-load driving.

• Installation at your own risk