With the SmartKey close to the C-Class, hold Unlock to unlock and open the windows and equipped sunroof; release to stop.
Check that your vehicle has it.
Verified for the 2024 U.S. C-Class Sedan; sunroof and seat-ventilation responses depend on fitted equipment.
- Required equipment / service
- SmartKey and power windows
Does the documented scope match your car?
This check combines the verified year, any source-supported powertrain scope, source-named trim/package and required equipment. It does not read a VIN or factory build record.
Published availability and qualifications
Verified for the 2024 U.S. C-Class Sedan; sunroof and seat-ventilation responses depend on fitted equipment.
- sunroof action if equipped
Know what kind of control to look for.
This original category diagram is an orientation aid, not a picture of your exact trim. Use the written labels and your vehicle manual to identify the real control.
Step by step.
- 01
Stand close enough to monitor every opening and keep people clear of the windows and roof.
- 02
Press and hold the Unlock button on the SmartKey.
- 03
Continue holding while the vehicle unlocks and the windows and equipped sunroof open.
- 04
Release Unlock when the desired opening is reached.
- 05
To continue, press and hold Unlock again while monitoring the openings.
Important limits
- The SmartKey must be in the immediate vicinity.
- The vehicle also unlocks during convenience opening.
- Keep hands and objects clear because moving glass can cause injury.
Quick checks.
- ✓Move closer to the vehicle if the command is not detected.
- ✓Confirm the SmartKey battery and window initialization if operation remains unavailable.
- ✓Release the button immediately to interrupt movement.
What happened on your vehicle?
Your response is stored on this device. If you separately allow analytics, a non-account-linked guide/result event may also be measured. No VIN or personal information is requested.
2024 Mercedes-Benz C-Class Sedan Owner's Manual — Convenience Opening
Relevant section or page: Opening and closing, p. 88. We use the written official source to determine the steps and applicability shown above.
Reviewed with a visible trail.
Scope and steps were checked by Car Cheat Codes Editorial Review. A guide is narrowed or corrected when the source does not support a broader claim.
- Published
- Last modified
- Source checked
Guide change history
- Initial verified publication.