Contact YouTube Blog Twitter facebook
1-800-280-6966
Login   |

0 item(s) in your Shopping Cart
Language:
Currency:
VAT Mode:
Product Categories
Email Newsletter Sign-up
Get notified about money saving
specials & deals for your BMW
enter your email address
Shop Confidently.
  • 18 years of BMW Tuning.
  • Award winning service.
  • 1,000's of parts in stock.
  • Quality BMW Parts only.
  • Hassle-free returns.
    • Helpful BMW Info

    Find us on Facebook


    What is EWS-II? EWS-II is an additional theft-deterrent system that BMW installed in cars beginning in Dec 1994 (12/94). On cars with EWS-II a coded signal from the key is sent through the EWS module onto the engine computer (DME). For the car to start, the DME must send a matching signal back through the module and to the key.

    How does it work? The key for your BMW has a microchip embedded in it that sends an analog signal to an antenna within the ignition lock on the steering column. The antenna sends the signal to the EWS-II module. The EWS-II module then checks with the DME to validate the code. The car can only be started when the DME recognizes the code from the EWS-II module. The key is simply turned, and by the time the ignition switch is reached, the EWS-II system has finished its processes and identified the electronic coding in the key and 'granted' starting permission.

    Why is EWS-II bad? This system can be a major stumbling block for a car that has an engine conversion or on a car that no longer needs the EWS-II system active. Cars that have had an engine swap, such as an E30 with an M50/S50/S52, may experience difficulty with the DME as the computer is looking for the signal from the EWS-II computer. E30s - and other models built before 12/94 - obviously do not have an EWS-II system. So we remove the code that makes the DME ask for the EWS signal.

    Racecars will not need the EWS-II system and will likely have that wiring and electronics removed from the car to save weight and increase reliability. Our software will allow the engine to be used with its original DME, thereby saving the owner labor and frustration in sourcing another DME.

    What does our EWS-delete software do? Our software is designed to disable the EWS protocol in the DME itself. It's like having an earlier non-EWS DME. For this to work properly, you cannot have any EWS-II components in the car. All of the original EWS equipment, including the ignition key, cannot be present. This is why our d-EWS chips will not work to fix a pre-existing EWS problem. Our software is strictly for using an EWS-II DME in a non-EWS car. If your EWS is experiencing problems, you may need an EWS alignment (synching all of the components together via a diagnostic computer), or you may have to replace the EWS module or key.