Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Becker Mexico, Grand Prix, Europa & Avus Models (SL Class)
Turn ignition on. Turn radio on. CODE will be displayed on radio. Enter 3-digit customer supplied code number by turning tuning knob to right until first digit is correctly displayed. Press AUTOMATIC button moving display to next digit. Confirm correct code is displayed by pressing AUTOMATIC button. Radio will turn on if correct code is entered.
If wrong code is entered, CODE will be displayed on radio. If wrong code is entered 3 times, WAIT will be displayed and code entry is denied for 15 minutes. Radio and ignition switch must remain on during the waiting period. If wrong code is entered 9 times, "_ _ _ _" will be displayed, radio is no longer operational, and must be returned to manufacturer for reactivation.
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Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.