Smart Fortwo occasionally fails to go into reverse, possible brake light switch replacement needed on Smart Fortwo

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Smart Fortwo owners report experiencing difficulties when trying to engage reverse, which may indicate a faulty brake light switch that requires replacement. This issue is commonly linked to the brake light switch located beneath the brake pedal, a known failure point in these vehicles. If reverse cannot be selected, it is likely that the brake light switch is the culprit. The average cost for replacing the brake light switch ranges from $90 to $99, with labor costs estimated between $35 and $44. A malfunctioning brake light switch can immobilize the car, making replacement necessary. Fortunately, there are step-by-step manuals and video tutorials available to assist with a DIY replacement. When undertaking this repair, it is crucial to locate the switch near the brake pedal assembly, remove the necessary mounting bolts or clips, disconnect the electrical connector, and secure the new switch in place. Addressing this brake light switch issue can help restore proper functionality and ensure smooth operation of the Smart Fortwo.

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