If so replace the fuse.
Mercedes benz automatic door lock.
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Check your fuse box first to determine if a blown fuse is keeping the lock from working.
Mercedes benz vehicles such as e c s ml gl r class are designed to automatically lock the doors as soon as you start to drive.
Once the service request is processed the mercedes benz response center will notify the customer through e mail text message or you receive a telephone call to confirm that your vehicle has been unlocked.
Click on the door unlock button.
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The horn will beep once to tell you that auto lock was deactivated.
There is a couple of ways to fix this problem.
If just one lock won t open on your mercedes then the problem may rest with broken wiring a bad solenoid or perhaps with a blown fuse.
Press the unlock button then press lock again.
The system then sends a signal to the customer s vehicle and unlocks the doors.
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Dealing with mercedes benz ignition switches alarm systems locks as well as immobilizer systems is work best suited to a professional mercedes benz locksmith for proper maintenance and repair.
Turn the ignition back to off and listen for the horn to beep one time confirming that the programming was accepted.
On those models the door lock actuators may fail causing the door lock to bounce up and down several times.
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