How-to: Program Jeep Grand Cherokee 2000 immo key when all keys lost using Xhorse VVDI Prog and VVDI2 key programmer.
Step 1: Read mcu data
Disassemble IMMO Box and desolder IC chip MC68HC908 with a hot gun
Solder MC68HC chip to VVDIProg HC058x programming adapter following wiring diagram
select Type 2 MCU->Motorola-MC68HC(9)08->HC08A232_EEP_SECURED
Read and save dump data, i.e jeep 2000.bin
Step 2: Make dealer key
Open VVDI2 software, select Transponder Programmer->Immobilizer Data Tool
Select vehicle information and load eeprom dump just saved
USA-Jeep->Grand Cherokee->1999-hc68hc08
Select an unused key position and press Make Dealer Key
Insert new transponder into VVDI2 key programmer
Prepare dealer key success. It can start engine after write back new dump file or learn it to car.
Save new key dump file
Step 3: Write back new dump
Open VVDI Prog software
Open new key dump file
Press Write
Write data success
Reinstall the immo box back to vehicle.
Now the new key can start vehicle.
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