Safe to driveTo the nearest safe stop
J1939 code SPN 524. Below — how the fault is worded at the factory by Mercedes-Benz and SITRAK, and what the second half of the code (FMI) means in the standard.
| FMI 9 | J1939 ETC2 message is missing or not available |
| FMI 12 | Timeout of the ETC2 CAN frame. Effect: Loss of communication with the modules, some functions are disabled. |
| FMI 19 | Incorrect data length of the ETC2 CAN frame. Effect: Loss of communication with the modules, some functions are disabled. |
| SPN 524 FMI 9524/9 · 524.9 | abnormal update rate |
| SPN 524 FMI 12524/12 · 524.12 | faulty device or component |
| SPN 524 FMI 19524/19 · 524.19 | error in received network data |
Safe to drive. Below — how much time you have and what happens if you keep going.
The gearbox or clutch has gone into limp mode: some gears may be unavailable and an automated box may stop shifting under load.
The main risk is being left on a climb with no gear and rolling back. Do not take a loaded truck into the hills; reaching level ground and a shop is fine.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.