The “7000-10-7F22” error occurs when the ECU returns a condition not met (NRC 0x22) response to an open communication request. The main causes are IG status mismatch (engine ON), incorrect upgrade mode selection, or interference from aftermarket devices. This can be resolved by adjusting the vehicle IG status, rechecking the upgrade mode, or removing aftermarket devices.
Symptoms
The “7000-10-7F22” error occurs immediately after starting the upgrade or in the early stages, and the process does not begin.
Causes
- The vehicle is in engine ON status, so communication conditions are not met (IG ON required)
- Incorrect selection of upgrade mode (automatic/manual)
- Communication initialisation is disrupted by aftermarket devices
- Unstable voltage prevents the ECU from maintaining communication-ready status
Solution
Step 1) Adjust IG Status
Switch the vehicle from engine OFF to IG ON status.
(Most ECUs do not allow open communication in engine ON status)
Step 2) Recheck Upgrade Mode
Check that the correct ECU/category has been selected in either automatic or manual mode.
Step 3) Remove Aftermarket Devices
Remove all black boxes, communication modules, and taxi equipment that may interfere with communication, then try again.
Step 4) Stabilise Vehicle Voltage
If the battery voltage is low, connect an external power supply device.
Step 5) Vehicle Power Reset
Caution: Disconnecting the battery (-) terminal may reset some vehicle settings.
1) Completely turn off the vehicle power.
2) Disconnect the battery (-) terminal for more than 5 minutes.
3) Reconnect and try the upgrade again.
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