Car Problem Reports

Mercedes-Benz E320 Brake Light Switch Failure May Cause ESP/BAS Warning Lights

Mercedes-Benz E320 Problem
29 Reports
Me Too

Model Years Affected: 1996, 1997, 1998, 1999, 2000, 2001, 2002

Average Mileage: 123,306 mi (15,000 mi - 340,000 mi)


The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.

  • Visitor, , 81,000 mi

    Mercedes-Benz E320 : Brake Light Switch Failure May Cause ESP/BAS Warning Lights

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  •  Rookie

    warning scared the crap out of me. 14 dollar part.

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  • Visitor, , 117,000 mi

    Brake light switch. Found loose connector.

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  • Visitor, , 144,252 mi

    ESP / BAS / ABS warning lights come on. Brake lights work intermittently.

    Shop replace brake light switch and relay. Checked all bulbs / connections. Fixed the problem for 10 miles, then the same issue came back.

    Returned to shop. They had the car for 2 days. No warning lights came on and the brake lights worked fine. 10 miles from the shop, the warning lights came on again and brake lights didn't work.

    I replaced the brake light switch as second time, but that did not make any difference. Problem still comes and goes.

    Going back to shop again.

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  • Visitor, , 110,115 mi

    Turn on ignition, step on break and get lamp defective, BAS, ESP, ABS malfunction messages.

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  • Visitor, , 95,000 mi

    Every year or so ,without fail I need to replace to brake light switch. The Bas/Esp light goes on and will want to lock out the transmission shifter. I have owned my car for 7 years and have replaced the switch 6 times. It is not a difficult DIY repair and takes about 20 minutes to complete. The switch is $25 and the dealer will charge you about $150 for labor to install it.

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  • Visitor, , 157,000 mi

    Warning: Check Lamps. Fix: Replace bulb.

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  • Visitor, , 103,000 mi

    not fixed working on it

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  • Visitor, , 23,000 mi

    failed 6 times also new style faided 2 x

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  • brake lights are now on all the time

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