What is EWS?
EWS – Electronische WegfahrSperre = immobilizer, anti-theft device
the ews stores the data of the car from new
What is EWS Test Platform?
BMW/Land Rover EWS Test Platform is the only one able (except Tango Key Programmer) to charge for the rechargeable key.with a EWS Test Platform, it means you own a set of advanced car key charger, and it can work with all rechargeable keys.
See this… working on rechargeable keys ( BMW 7 series E65 E66 and X5 EML keys)
Why do you need a EWS Test Platform?
- 1.to checkEWS3, EWS4 is working or not
2. to check whether the PCF7935 chip or EML electronic chip key complete programming or not.
3. to check EML key electronic chip working or not, and test after fixing EWS data.How to use the EWS3 EWS4 Test Platform for BMW/Land Rover?
Connect the EWS3/EWS4 with the Test Platform, and supply 12V power for the device, you will see the white indicator flashes, it indicates EWS3 is working well;
After the EWS4 is supplied with 12V power, you will see the indicator light fast flash, it indicates EWS4 is working well.
If you can’t see the white indicator flashes, it indicates EWS can’t work well, please check whether 0D46J or 2D47J is not welded well, or maybe EWS is damaged, if it is so you could buy a used EWS and fix it by writing data.
Put the programmed PCF7935 chip or EML electronic chip key near the middle of the test platform, and wait for 3 to 5 seconds, you will hear the relay in the EWS3 or EWS4 make a sound when working and see the red indicator flashes, it indicates the chip programming complete.
This is from China car diag official blog:How to know your EWS3/ESW4 is working or not?
