The MAXI kit not only contains key programming tools but also tools that allow the erasing of the modules in Mercedes-Benz cars (including ECUs and gearboxes) and also testing on the bench. The MAXI kit also contains emulators and a ready-to-use key.

The most important added feature is a function that effortlessly allows password reading and key programming in vehicles with BGA keys:
The add key (at least one existing key), list below covers only BGA equipped vehicles

• W164 2009 +
• W166,
• W197
• W212
• W218
• W246
• W169
• W209
• W211
• W172
• W204
• C207
• W216
W221
• W639 2009+

All key lost, list below covers only BGA equipped vehicles

• W204
• C207
• W166
• W197
• W212
• W218
• W246

All calculations for BGA keys are done on-line and an internet connection is required; the software is pay-per-use. The kit includes 20 credits (20 password calculations).