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.
Electronic Anti-Theft Protection
The RNS is equipped with anti-theft coding, which operates in conjunction with the instrument cluster.
After disconnecting the radio power supply, the RNS (Radio Navigation System) is ready for use again once the power supply is connected. The anti-theft code does not need to be entered again. The anti-theft coding must be activated for the first time and the radio navigation system must be connected in the same vehicle.
Use the Vehicle Diagnostic Tester to get the anti-theft code. The radio card and the label on the RNS (Radio Navigation System) that were used in the past are no longer used.
The Vehicle Diagnostic Tester must be connected "online" to determine the anti-theft code. The user must have the proper authorization to access the anti-theft code.
Use Vehicle Diagnostic Tester to get the anti-theft code:
-- Vehicle Diagnostic Tester Connect.
-- Select Guided Functions .
-- Use the GO TO button to select the "function/component selection" and the following menu options one after the other:
- Body
- Electrical Equipment
- 01-OBD-capable system
- Radio/navigation system
- Radio/navigation system functions
- Radio code inquiry
Authorization will be requested from the system: Then the operating data, the VIN and the radio serial number of the radio/navigation system will be automatically read out.
The Vehicle Diagnostic Tester will display the anti-theft code.
The anti-theft code must be entered manually into the RNS.
Electronic Anti-Theft Protection, Deactivating:
-- Turn on the RNS.
"SAFE" appears in the display for approximately 10 seconds, after that "1000" appears.
-- Enter the correct anti-theft code using the keyboard on the input mask.
-- Press the input screen to confirm in the entry.
The RNS (Radio Navigation System) is enabled and ready for operation.
Use the correction screen to erase an incorrect code.
If an incorrect anti-theft code is entered, the code can be entered a second time. If anti-theft code is entered incorrectly twice, then the RNS (Radio Navigation System) is locked for an hour. Leave the RNS and ignition on. The procedure can be repeated after one hour.
Note: the anti-theft code can be entered two times. After that, the RNS locks up for one hour.
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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.