How To Reset Ews On Bmw?

How to Reset the EWS on a BMW

The Electronically-controlled Water System (EWS) is a security system that is used on BMW vehicles to prevent unauthorized use. If the EWS system is not working properly, it can prevent your BMW from starting. In this article, we will show you how to reset the EWS system on your BMW so that you can get back on the road.

What is the EWS System?

The EWS system is a computer-controlled system that uses a chip in the key to identify the authorized user of the vehicle. When you insert the key into the ignition, the EWS system reads the chip and compares it to a database of authorized keys. If the key is not authorized, the EWS system will prevent the engine from starting.

How to Reset the EWS System

There are two ways to reset the EWS system on a BMW:

• Using the OBD-II port
• Using the EWS reset button

Using the OBD-II port

1. Turn off the engine and open the hood.
2. Locate the OBD-II port, which is usually located under the dashboard.
3. Plug an OBD-II scanner into the port.
4. Turn on the scanner and select the “EWS reset” option.
5. Follow the on-screen instructions to reset the EWS system.

Using the EWS reset button

1. Turn off the engine and open the hood.
2. Locate the EWS reset button, which is usually located on the driver’s side of the engine compartment.
3. Press and hold the EWS reset button for 10 seconds.
4. Start the engine.

Troubleshooting

If you are unable to reset the EWS system using either of the methods above, you may need to take your BMW to a qualified BMW dealer for service.

Step	Action	Explanation
1	Turn the ignition switch to the “On” position.	This will power up the EWS system.
2	Press and hold the “Unlock” button on the driver’s door.	This will enter the EWS programming mode.
3	Enter the EWS security code.	The EWS security code is a 4-digit number that is unique to your vehicle.
4	Press the “Lock” button on the driver’s door.	This will save the new EWS security code.

What is EWS on BMW?

The Electronic immobilizer System (EWS) is a security feature that is used on BMW vehicles to prevent unauthorized operation. The EWS system uses a transponder chip that is installed in the key and a receiver in the vehicle. When the key is inserted into the ignition, the transponder chip sends a signal to the receiver. If the signal is valid, the vehicle will start. If the signal is not valid, the vehicle will not start.

The EWS system is very effective at preventing theft, but it can also be a source of frustration if the key is lost or damaged. If you lose your key, you will need to have a new key programmed to your vehicle. This can be done at a BMW dealership or an authorized BMW repair shop.

The EWS system can also be reset if the vehicle is involved in an accident. If the vehicle’s computer is damaged, the EWS system may need to be reset in order for the vehicle to start.

How to tell if your BMW has EWS

There are a few ways to tell if your BMW has EWS.

• Look for the EWS warning light. The EWS warning light is a yellow light that is located on the dashboard. If the light is on, it means that the EWS system is not working properly.
• Check the owner’s manual. The owner’s manual will have a section on the EWS system. It will tell you how to check if the system is working properly and what to do if it is not.
• Take your vehicle to a BMW dealership or authorized BMW repair shop. The technicians at the dealership or repair shop will be able to tell you if your BMW has EWS and if it is working properly.

How to reset EWS on BMW

If you lose your key or if the EWS system is not working properly, you will need to have the EWS system reset. This can be done at a BMW dealership or an authorized BMW repair shop.

The following steps are a general overview of how to reset the EWS system on a BMW. Please note that the specific steps may vary depending on the model of your vehicle.

1. Turn off the ignition.
2. Locate the EWS reset button. The EWS reset button is usually located under the steering wheel.
3. Press and hold the EWS reset button for 10 seconds.
4. Turn on the ignition.
5. The EWS system will be reset.

If the EWS system is still not working properly, you will need to take your vehicle to a BMW dealership or authorized BMW repair shop for further assistance.

The EWS system is a valuable security feature that can help to prevent theft of your BMW. If you lose your key or if the EWS system is not working properly, you will need to have the EWS system reset. This can be done at a BMW dealership or an authorized BMW repair shop.

How to reset EWS on BMW

The Electronic immobilizer System (EWS) is a security feature that is designed to prevent unauthorized vehicles from being started. If the EWS system malfunctions, it can prevent your BMW from starting. In this article, we will show you how to reset the EWS system on your BMW.

Step 1: Disconnect the battery

The first step is to disconnect the battery from your BMW. This will reset the EWS system and allow you to start your vehicle. To disconnect the battery, locate the battery terminals under the hood of your BMW. Use a wrench to loosen the negative battery terminal and then disconnect the positive battery terminal.

Step 2: Wait 10 minutes

After disconnecting the battery, wait 10 minutes for the EWS system to reset. This will allow the system to forget the previous security code.

Step 3: Reconnect the battery

Once 10 minutes have passed, you can reconnect the battery to your BMW. Be sure to connect the positive battery terminal first, followed by the negative battery terminal.

Step 4: Start the vehicle

Now that the battery is reconnected, you can try to start your BMW. If the vehicle starts, the EWS system has been successfully reset.

Troubleshooting tips

If you are unable to reset the EWS system on your BMW, there are a few troubleshooting tips that you can try.

• First, check to make sure that you have disconnected the battery for at least 10 minutes.
• If you have disconnected the battery for 10 minutes and the EWS system is still not resetting, try disconnecting the battery again and then reconnecting it.
• If you are still unable to reset the EWS system, you may need to take your BMW to a qualified BMW technician.

In this article, we have shown you how to reset the EWS system on your BMW. If you are unable to reset the EWS system on your own, you may need to take your BMW to a qualified BMW technician.

How do I reset the EWS on my BMW?

1. Turn the ignition switch to the ON position (II).
2. Press and hold the EWS reset button (located on the driver’s side door jamb) for 5 seconds.
3. Turn the ignition switch to the OFF position (0).
4. Turn the ignition switch to the ON position (II) and start the engine.

What happens if I reset the EWS on my BMW?

When you reset the EWS on your BMW, it will erase all of the previous EWS codes and return the system to its default state. This means that you will need to re-program the EWS with the correct key code.

How do I reprogram the EWS on my BMW?

To reprogram the EWS on your BMW, you will need to have the following:

• A BMW scan tool
• The correct key code for your vehicle

1. Connect the BMW scan tool to your vehicle’s OBD-II port.
2. Turn the ignition switch to the ON position (II).
3. Enter the correct key code into the BMW scan tool.
4. Press the “Program EWS” button on the BMW scan tool.
5. The BMW scan tool will reprogram the EWS with the correct key code.

What are the symptoms of a faulty EWS?

There are a number of symptoms that can indicate a faulty EWS, including:

• The vehicle will not start
• The engine will stall
• The check engine light will illuminate
• The anti-theft system will be activated

If you experience any of these symptoms, it is important to have your EWS system checked by a qualified BMW technician.

How much does it cost to fix a faulty EWS?

The cost of repairing a faulty EWS can vary depending on the severity of the problem. In general, you can expect to pay anywhere from $200 to $1,000 for repairs.

Can I prevent EWS problems?

There are a few things you can do to help prevent EWS problems, including:

• Keeping your key fob batteries in good condition
• Avoiding dropping or damaging your key fob
• Having your EWS system checked regularly by a qualified BMW technician

  In this blog post, we have discussed how to reset the EWS on a BMW. We have covered the steps involved in resetting the EWS manually, as well as using a BMW scanner. We have also provided information on the causes of EWS errors and how to prevent them. We hope that this information has been helpful. If you have any further questions, please do not hesitate to contact us.