How would the key go bad? Exposed to an incredibly strong magnet? When I get home in a couple of days I can check the the resistance on mine. i replaced it a few years ago with one from a Ducati.
I don’t see any way that an RFID chip in a key could go bad. I’ve tried everything I could find to do here on all the different threads with no luck clearing the EWS code.
here is the inside of the ECM. top and backside. I have been trying to reflash this for quite some time with zero success. zero support for this ecm and I have all the Legit software and hardware to do any bench flash. it is also shared with the bmw f17 scooter exact same immo setup as well. I have identified all the processors and labeled them. if I can get access. reflsh off the immobilizer and your all set. Plus add fuel ans some timing on the low end so it doesnt stall. if ANYONE can assist. email me Vforcejohn@yahoo.com
My strata has the exact same behavior. -My bike has two keys that worked previously and both result in a solid EWS. Probably not the key. -I have made two other "ring antennas" and they both result in a solid EWS...I'm going to assume the ring antenna is not the issue. -I have tried the grounding strap to the ECU as well with no change in ews. Did you change the wiring of the bike in any way? Any accessories at all? -Mine had a 5v plug under the headlight shroud soldered into the ignition wiring going to the ignition switch(soldered to both green wires) but it has been there a while.
The problem - I believe - with my bike was corrosion in the circuitboard within the dash. I only found it while replacing the dash, ECU, et cetera, with components I bought to rectify the issue. I intend to send it to a circuitboard repair specialist. It should cost around £100 to repair.
If you have any success, please let us know in this thread! I've been thinking about reverse engineering the mapping, although I've not done anything like it before. There are some tutorials on YT, and free software available for the task. It looks to be a bit fiddly, but simple enough.
Take your key to a locksmith's shop. They should have a very simple counter-top testing device. This is what I did, and it was free. The key was found not to be the cause of the fault. Have you made any progress since your post?
Any updates? I made yet another ring antenna replacement with no change in EWS: When I plug in the replacement ring antenna and place the key in it, I get solid EWS. When I remove the key from the replacement ring antenna, I get a blinking EWS. Same behavior from the other two replacements I have made, the original ring antenna, and trying out the two (OEM) keys I have for the bike.
Looks like I made my fix and never looked back. Apologies! I was able to fix my ring antenna by soldering the very thin wires that are encased inside the plastic of the ring antenna back onto the wires that plug into the computer. Because of where the wires broke there was not enough wire hanging out to get them to crimp together. I had to very carefully cut away at the plastic housing to expose enough wire to make a clean solder joint. After I soldered it together I sealed everything with heat shrink and put it back together. It has been running well ever since. I don’t recall what the cause of my pop sound was but the problems seemed to go away after fixing the ring antenna. After 2 years, the fix I made is still working. Sorry again for the delay in response.
