1sngkp¶

1 excerpts.

Reddit thread: Car suddenly went into Neutral while driving¶

reddit.com/r/Cartalk/comments/1sngkp · p. 1 · Applies to: 451

Source: r/Cartalk (score 7, 27 comments) Topic: Automated manual transmission malfunction, sudden neutral engagement Models discussed: 451 Solution status: unclear

Problem: 2013 Smart ForTwo automatic transmission suddenly went into Neutral while driving at 25 mph; the dash showed Neutral but the clutch didn't move, wrench indicator flashed, and car returned to Drive after 10 seconds. Check engine light came on afterward.

Solution: Multiple replies suggest this is a known issue with Smart's automated manual transmission, likely a software glitch or transmission controller/actuator problem. Recommended solution: take to dealer for warranty service; some owners report a "re-teach" procedure in the owner's manual resolved the issue for most cases. One anecdotal reply mentions dealer clearing the code without fixing the underlying problem.

Key facts: - Car has only 5,000 miles and is still under warranty - Smart ForTwo uses an automated manual transmission, not a traditional automatic, which is mechanically significant - Check engine light and wrench indicator suggest transmission controller or actuator failure - Multiple owners report this as a known issue, often resolved by dealer reset or "re-teach" procedure - Thread recommends against driving the car due to safety risk of unexpected neutral engagement in traffic - Standard code readers may not properly diagnose Smart transmission codes