VOLVO
MMM-1000 - Control module. Internal fault
System
Multi Media Module (MMM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013), XC90 (2003–)
What does this fault code mean?
The multimedia module (MMM) compares the data written to and read from its internal memory, and checks the memory automatically at start-up. The code is set when the module finds a difference between written and read data, or when the internal memory proves to be damaged or incorrect.
Possible causes
- Written and read data do not match inside the control module
- Damaged or incorrect internal memory
- Damaged multimedia module (MMM)
What you can do
- 1Erase the code, switch the ignition off and on again, and check whether it comes back
- 2Check that the multimedia system and the navigation work normally after the restart
- 3If the fault recurs, have a workshop replace the multimedia module (MMM)
- 4After a replacement the module needs some mixed driving before it is calibrated and shows correct traffic information
Symptoms you may notice2
- The multimedia system does not work
- The navigation does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.