BMW X5 EWS 3 - new key prepared, but fault code 1Df5, no start?

[instakeys]

Hi DK folks. Need some help...
Read EWS and wrote new PCF with EWS Editor, chip now reads as BMW Rolling, VIN and Mileage correct, checked 'used' before writing to EWS.
Ran diag test and key is recognised as key 10. Not starting, and getting Fault Code 1Df5? Something about mismatch on random code?

Anyone know what I can do to sort this?


Thanks for any advice.

[adamgr]

You Do not tick used. Thats your problem here

[instakeys]

So uncheck 'used' and write to EWS. Thanks. Will reply to thread with result.

[PCF]

oe ur better way is to read with ews reader and write the ship woth ak90 or zed bull it will start for sure

[ninja123]

no need to write back to ews, use xprog and all will be fine.

ninja

[instakeys]

Thanks a lot for the help Adamgr. PCF and Ninja. I appreciate it!

I resolved this last night. Just used EWS Editor to uncheck 'used' on key 9 - then wrote back to EWS.
Chucked the module back in the X5, started 1st time
I've had EWS tools for ages and never had to use them...

[Freezzby]

Hi all I have a similar problem with a x5 3.0d after a dead battery car crank but no start ,do a diag and have a 1DF5 error.
I don't understand the part for uncheck used key.
Can someone explain me ,thanks.

[lion0304]

Hi all I have a similar problem with a x5 3.0d after a dead battery car crank but no start ,do a diag and have a 1DF5 error.
I don't understand the part for uncheck used key.
Can someone explain me ,thanks.

Your case lost synchro DDE-EWS. Read ISN in DDE and put in EWS.

[Freezzby]

I read on other post's that the rolling codes mess ,how to fix this rolling codes ?
I can post the dumps perhaps someone can fix it.

[bram380]

try this dump:

[rm23]

Freezzby - do synchro by obd2...

[Freezzby]

Thanks for the advice but tried to sync with ista and have error can't sync and with fvdi also.
Can't delete error code 1DF5 and if I uncheck the key used car no crank but no more error 1DF5.
The ISN from 5P08 from eeprom and from ews is same .

[Freezzby]

Thanks bram380 I will flash your file to the ews ,do I need to do something else or just put key and try to start the car ?

[bram380]

reprogram ews and use original key

[Freezzby]

Thanks for your help , I will update tomorrow if working with the ews reset you made