ML (163) Key Re-Chip Service

More ML Mercedes vehicles are showing up with bad keys, AAMs, and ME control modules. Data is scrambled, the immobilizer LED on the dash will not flash, and the vehicle no longer starts. Fault code P1570 is also usually present in the ME. Further complicating the situation is the design of the immobilizer system which limits the vehicle to 8 keys. Once all 8 have been issued by the dealer no more replacement keys can be obtained. The current dealer option requires replacing the ME, AAM, buying new lock sets, and paying for installation and programming. 

We have developed a process to repair all affected components and restore the vehicle to normal operation. By sending us the ME, AAM, and keys, we can reprogram the modules and re-chip the keys to get you or your car on the road again. When you receive the units and keys back, everything will be "plug-and-play".

FCC ID Example

FCC ID Example

The following items will be required for this service:

  • ME (Engine Control Module)
  • AAM (All Activity Module)
  • Keys (Up to 7 remote keys and 1 valet key)
  • Proof of ownership (copy of registration, title, etc.)


What caused this to happen?
The common failure for the Key/AAMs is low voltage situations usually while starting the engine. This can be caused by:

  • A weak vehicle battery
  • Poor ground connections at the battery, engine, or chassis
  • Bad contacts in the ignition key electrical assembly
  • Occasionally a poor fuse box connection

NOTE: If these potential issues are not corrected before the re-chip service it is likely that the damage will reoccur! 

I'm out of keys or only have one left!
You can actually use keys from another vehicle as long as the year, model, and FCC ID on the remote match. The FCC ID can be found stamped on the back or side of the remote (see picture above). Please be aware that you will need to buy new metal blades for the used remotes that you buy. New blades can be purchased at the dealer and there should be no limit on them.

How long does this service take?
We can typically perform this service within 2-3 business days of arrival. Including a note with your contact information and what service you need done will help expedite this process.