Issue:The TCUB software of some domestic L550 PHEV vehicles needs to be updated.
Cause:Software need upgraded
Action:For the following vehicles, please update the TCUB software to the latest version through SOTA before delivery to the customer.
1. Vehicle start (in status of Crank or Run) maintain 20minutes, would finish TCUB new SW download.
2. Then ignition off the vehicle wait sleep, restart the vehicle (in status of Crank or Run), maintain 10 minutes, finally the vehicles would complete SW updated. 
If you encounter problems during the update process, please get technical support through CJLR_Tech_Service@cheryjaguarlandrover.com.
Affected vehicles:
L2CHA2B78MG126311
L2CHA2B79LG125473
L2CHA2B7XMG126049
L2CHA2B73MG126023
L2CHA2B78MG126034
L2CHA2B76LG125284
L2CHA2B76MG126274
L2CHA2B76MG125934
L2CHA2B79LG125618
L2CHA2B70MG126674
L2CHA2B72LG125332