Table of Contents

BMW (Exx Series) - emulator with 4-pin plug with 3 wires

BMW (Fxx Series)


BMW (Exx Series) - emulator with 4-pin plug with 3 wires

Take a look at the installation video: CLICK HERE

1. Before fitting the emulator scan your car with a diagnostic scanner to verify you have defective passenger seat mat fault code and there are no short circuits or open circuits. Take a photo, it might be helpful in the future.

2. Turn the ignition off.

3. Find the 4-pin plug of the seat mat with 3 wires: white, red and brown. It is located under the passenger seat, at the back. You need to look for it from the back seat.

4. Disconnect the seat mat plug and replace it with the emulator's plug.

5. If your car is equipped with an unfasten seat belt warning system, now you can also connect the seat belt emulator. Click here to read the installation instruction for the seat belt emulator.

6. Connect again the diagnostic scanner and reset your old fault codes. The defective passenger seat mat error should not be present anymore and the SRS light should go off.

After the procedure the fault code (or the SRS light) is still present. What should I do?

Do not worry. We will help you solve the problem but we need more details about your current situation in order to learn what is the root cause of your problem and provide the best solution. Please send us the following informations:

Step 1. Check if the LED light on emulator blinks alternately blue/green or red/green light (depends on the emulator, check the information on the sticker). No blinking lights or one color missing mean there is a problem with proper communication with the ACU or there is no power (+12V) sent to the emulator.

Step 2. Connect the diagnostic scanner and take photo of all fault codes you have and their descriptions. Remember that this photo is for step 2.

Step 3. Turn the ignition off. Disconnect the emulator, but do NOT connect anything. Reset the fault codes and read new fault codes. Take a photo of all fault codes and remember that this photo is for step 3.

Step 4. Turn the ignition off. Now connect your original seat mat plug. Reset the fault codes and read new fault codes. Take a photo of all fault codes and remember that this photo is for step 4.

If the fault codes are the same in all steps then you have the Airbag Control Unit broken. This problem is not connected to a faulty seat mat and the emulator will not help you with that problem. If you have different fault codes on every step, the send us all photos here: [email protected]

We need ALL photos to do a proper diagnosis of the problem and give you a proper solution.

The fault codes disappeared but the SRS light on the dashboard is still present. What should I do?

If the fault codes are not present anymore but the SRS light is still present it means the fault code has not been removed from all modules. BMW stores fault codes related to safety in a few modules (the Airbag Control Unit is just one of them). When the emulator is connected, perform a full scan of all modules using a proper BMW diagnostic scanner. Some cheap scanner do not perform a full scan even if they say they do.


BMW (Fxx Series)

Take a look at the installation video: CLICK HERE

1. Before fitting the emulator scan your car with a diagnostic scanner to verify you have defective passenger seat mat fault code and there are no short circuits or open circuits. Take a photo, it might be helpful in the future.

2. Turn the ignition off.

3. Find a big yellow connector box under the passenger seat and open it.

4. Locate a 4-pin plug with 3 wires (brown, red, white). You need to remove all plugs in the connector box to get an access to the seat mat plug.

5. Remove the seat mat plug by sliding it to the left.

6. Remove the wires from the plug and insert the emulator wires in their place (red wire to the pin where the original red wire was, etc.).

7. Insert the seat mat plug and other plugs into the connector box and close it.

8. Now you can connect the seat belt emulator. Click here to read the installation instruction for the seat belt emulator.

After the procedure the fault code (or the SRS light) is still present. What should I do?

Do not worry. We will help you solve the problem but we need more details about your current situation in order to learn what is the root cause of your problem and provide the best solution. Please send us the following informations:

Step 1. Check if the LED light on emulator blinks alternately blue/green or red/green light (depends on the emulator, check the information on the sticker). No blinking lights or one color missing mean there is a problem with proper communication with the ACU or there is no power (+12V) sent to the emulator.

Step 2. Connect the diagnostic scanner and take photo of all fault codes you have and their descriptions. Remember that this photo is for step 2.

Step 3. Turn the ignition off. Disconnect the emulator, but do NOT connect anything. Reset the fault codes and read new fault codes. Take a photo of all fault codes and remember that this photo is for step 3.

Step 4. Turn the ignition off. Now connect your original seat mat plug. Reset the fault codes and read new fault codes. Take a photo of all fault codes and remember that this photo is for step 4.

If the fault codes are the same in all steps then you have the Airbag Control Unit broken. This problem is not connected to a faulty seat mat and the emulator will not help you with that problem. If you have different fault codes on every step, the send us all photos here: [email protected]

We need ALL photos to do a proper diagnosis of the problem and give you a proper solution.

The fault codes disappeared but the SRS light on the dashboard is still present. What should I do?

If the fault codes are not present anymore but the SRS light is still present it means the fault code has not been removed from all modules. BMW stores fault codes related to safety in a few modules (the Airbag Control Unit is just one of them). When the emulator is connected, perform a full scan of all modules using a proper BMW diagnostic scanner. Some cheap scanner do not perform a full scan even if they say they do.