Blocking AUTOSTOP Cause, Starter Motor

The following causes block autostop:

• Overheated starter motor. Every time the starter motor is activated, current flows through its windings which causes the starter motor to heat up. Too many start attempts in a row can cause the starter motor to overheat. If the Engine Control Module (ECM) registers 10 starts in quick succession, the function is blocked to protect the starter motor. An internal counter then counts down the value to permit the function once again.

Checks:

• If too many start attempts have been made in succession, wait 2 minutes with the engine running or switch off the ignition, remove the key, lock the vehicle and wait until the engine management system goes into standby mode. The control module then resets the internal counter.