Gearbox Malfunction Warning – What It Means and Why It Appears

A “gearbox malfunction” warning doesn’t always mean mechanical damage. In many cases, it’s triggered by electronic control or sensor faults, especially in automatic and DSG gearboxes.

Common Reasons for Gearbox

Malfunction Warnings
• Gearbox control unit (TCU) faults
• Mechatronic communication issues
• Pressure or temperature sensor errors
• System protection or limp mode activation
Symptoms Drivers Often Notice
• Delayed or harsh gear changes
• Gearbox stuck in one gear
• Reduced performance

What This Warning Tells You
The gearbox system has detected data outside expected values. This is often a protective response, designed to prevent further damage rather than indicating immediate failure.