A Volvo S80 2005 driver has lost all car keys. Here is the step-by-step guide to program new key fob under all keys lost.
Step 1: Read EEPROM Data
Disassemble Engine Control Module (ECM) under dashboard, remove and open ECU
Locate 93C86 chip on CPU
Desolder chip and read 93C86 data via ECU programmer,i.e Xprog, then save eeprom data
Some key programming tool optional options you can write key on this model, i.e TM100, VVDI or Tango.
Here take an example of TM100 key programmer.
Connect TM100 with computer, open software, select KeyMaker
Select Volvo-S80-(-2003 28F400)
Then select Open Dump File, upload 93c86 eeprom data just read
Wait some minutes to upload file. Then TM100 will display key information, key number, key position etc.
TM100 will re-write ID48 key chip data to car original 93C86 chip and generate a new 93C86 dump file in a few minutes.
Re-write the new 93C86 chip data to car original 93C86 chip via ecu programmer.
Reinstall ECM back to car, now you can start car with the ID48 chip.
Re-write the new 93C86 dump file back to car original 93C86 chip with ecu programmer.
Reinstall the ECU back to car. The new ID48 chip will start car.