BMW CAS4 Cloning


How it works

You will need to send us the original CAS module, and We will Clone it to another same type CAS module and send it back. It will be a full clone of your original CAS. CAS4 / CAS4+ module is located just above accelerator pedals. It’s a light gray module, and it will say CAS4 on the label.


It can randomly fail; most fail module is hardware related.

It can also fail when cheap tools are used to make new keys, or your module was removed, and someone tried soldering to the board to make a key.


We will clone your faulty CAS4 to a working used CAS4 module, And after it will be plug and play.

Category: Tags: , , , , Product ID: 218


The CAS control unit checks the status information sent from the electric steering lock. If the status information shows a fault, the CAS control unit refuses start authorization and therefore provides no release for terminal 15.

The CAS control unit is the interface with the START-STOP button and ring aerial. The ring aerial on the steering column transmits the key data. The ring aerial is used for communication between the transponder chip (in the ID transmitter) and the CAS control unit. In unfavorable situations (e.g., ID transmitter fault, malfunction of radio transmission to the ID transmitter), the ID transmitter may not be found via the passenger compartment’s interior aerials.

Communication via the ring aerial makes it possible for the CAS control unit to identify a valid ID transmitter and start enabling.

Depending on the vehicle equipment fitted, the comfort access system’s control unit function is integrated into the CAS control unit. Outside door handle electronics are incorporated in each one of the outer door handles. Changes in door handle status are recorded by the external door sensors’ sensors and transmitted to the CAS control unit. The ID transmitter is requested via an aerial signal from the CAS control unit to identify itself. The CAS control unit emits the aerial signal via the exterior aerials.

Additional information


225/50/R17, 225/50/R18, 225/50/R19


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Available Appointments on 05/30/2024

  7:50 AM – 8:20 AM1 space available
  8:20 AM – 8:50 AM1 space available
  8:50 AM – 9:20 AM1 space available
  9:20 AM – 9:50 AM1 space available
  9:50 AM – 10:20 AM1 space available
  10:20 AM – 10:50 AM1 space available
  10:50 AM – 11:20 AM1 space available
  11:20 AM – 11:50 AM1 space available
  11:50 AM – 12:20 PM1 space available
  12:20 PM – 12:50 PM1 space available
  12:50 PM – 1:20 PM1 space available