1. Faster and safer to write MCU.
2. Internal Benz original factory key generator.
3. Support NEC fast renew, Motorola MCU safe read and write.
4. Support infrared read and write NEC key and Motorola MCU key.
5. Support Benz read and write "Key-less go" Key.(Only this machine support)
6. Support through OBD port active Key-less function.
7. Key test function: more easier to test key and EIS(ESL).
8. Support ESL fast unlock, no need 32G database.
9. Support through OBD read and write SBC data, easier for change SBC control unit.

Does AK500PRO support Mercedes Benz W204 after 2008?
Answer: so far AK500PRO doesn't support NEC eeprom key programming, but support AK500pro NEC eeprom key calculation.
W204 is with NEC eeprom, therefore AK500pro neither supports W204 nor supports the following Mercedes Benz models: w204/w207/w221/w218 and W164 after 2008 year which EIS model CPU is NEC.

Important Notice on KEYLESS GO function
If you want to use KEYLESS GO function: the key used to make key must be new and blank key, it can't be used key. New key must be as the same type and frequency as the original keyless go key. Otherwise it will cannot support keyless go function.

AK500Pro VS AK500, Buy AK500Pro or AK500

AK500	AK500Pro
Read and write EIS: HC705/HC908/HC912/9S12	Read and write EIS: HC705/HC908/HC912/9S12
No Benz original factory key calculator	With Benz original factory key calculator
Need to remove ESL/ESM/ECU to synchronize data	Support calculating key only need EIS data, no need to remove ESL/ESM/ECU
Doesn't support infrared write old model big key (Motorola CPU)	Support infrared write old model big key (Motorola CPU)
Support programming infrared key for Mercedes Benz 1998 to 2005	Support programming infrared key for all Mercedes Benz 1998 to 2011
Doesn't support EGS which is 722.9 type of gearbox computer	Support EGS which is 722.9 type of gearbox computer
Doesn't support programming key for W203/W211 with ECU flash 29F400 and 29F800	Support programming key for W203/W211 with ECU flash 29F400 and 29F800
Doesn't support Benz read and write "Key-less go" Key	Support Benz read and write "Key-less go" Key
Need 32G database to support ESL fast unlocks	Support ESL fast unlocks no need 32G database
Support SBC computer reset, doesn't support through OBD read and write SBC EEPROM	Support SBC computer reset,support through OBD read and write SBC EEPROM