Mercedes-Benz S-CLASS SEDAN 2023 Vehicle User Manual
Vehicle
Possible causes/consequences and M Solutions
The driver’s display is inoperative due to a failed software update. The display message will be shown every time the engine is started.
WARNING
Risk of the accident if the driver display fails If the driver display has failed or is malfunctioning, function restrictions in systems relevant to safety cannot be detected. The operating safety of your vehicle may be impaired.
- Drive on carefully.
- Has the vehicle been checked immediately at a qualified specialist workshop?
- If the operating safety of your vehicle is impaired, park the vehicle immediately and safely.
- Contact a qualified specialist workshop.
Plug-in hybrid:
WARNING
Risk of accident due to failure of the driver display In the event that the driver display fails or malfunctions, you will not recognize function restrictions affecting systems relevant to safety. This may impair operating safety.
- Park the vehicle safely as soon as possible and notify a qualified specialist workshop.
| Display messages | Possible causes/consequences and M Solutions |
| If the driver’s display fails, you may not recognize function restrictions affecting systems relevant to safety or the speed display, for example. The operating safety of the vehicle may be impaired (/ page 360). Has the vehicle checked by a qualified specialist workshop immediately? | |
 Vehicle Ready to Drive Switch the Ignition Off Before Exiting | You are leaving the vehicle in a ready-to-drive state. Get out of the vehicle, secure it against rolling away and take the key with you. If you do not leave the vehicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the 12 V battery may discharge and starting the engine may be possible only with the help of a second battery (jump start). |
| Head-up Display Currently Unavailable See Operator’s Manual | The head-up display is temporarily unavailable. Possible causes: Malfunctions in the power supply Signal interference Stop in accordance with the traffic conditions and switch the vehicle off and on again. If the display message still appears, consult a qualified specialist workshop. |
| Head-up Display Inoperative | The head-up display has an internal error. Consult a qualified specialist workshop. |
| Display messages | Possible causes/consequences and M Solutions | ||
| Head-up Display Bright- ness Currently Reduced See Operator’s Manual | The brightness of the head-up display is reduced. Possible causes: Dirt on the windshield in the camera’s field of vision Faulty exterior brightness signals Switch on the windshield wipers. Clean the windshield if necessary. Switch the vehicle off and switch it back on If the display message still appears, consult a qualified specialist workshop. | ||
 Steering Malfunction Drive Carefully Service Required | A power steering malfunction has occurred. Steering characteristics may be impaired as a result. Drive on carefully. Consult a qualified specialist workshop. | ||
Steering Malfunction Increased Physical Effort See Operator’s Manual | The power steering assistance is malfunctioning. | ||
| & WARNING Risk of an accident due to altered steering characteristics | |||
| If the power assistance of the steering fails partially or completely, you will need to use more force to steer. # If safe steering is possible, drive on carefully. # Visit or consult a qualified specialist workshop immediately. | |||
| Display messages | Possible causes/consequences and M Solutions | |||
 Steering Malfunction Stop Immediately See Opera- tor’s Manual | The steering is malfunctioning. Steering capability is significantly impaired. | |||
| WARNING Risk of accident if steering capability is impaired | ||||
| If the steering does not function as intended, the vehicle’s operating safety is jeopardized. Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. Consult a qualified specialist workshop. | ||||
Rear Axle Steering Currently Malfunctioning | The rear axle steering is temporarily unavailable. The turning radius may become wider. Stop the vehicle in accordance with the traffic conditions and restart the vehicle. If the display message does not disappear: | |||
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| Drive on carefully. Consult a qualified specialist workshop. | |||
Rear Axle Steering Malfunction Service Required | The rear axle steering is malfunctioning. The rear axle has no steering capability. The steering wheel may be at an angle when you drive in a straight line. | |||
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| Adapt your speed and drive on carefully. Consult a qualified specialist workshop immediately. | |||
| Display messages | Possible causes/consequences and M Solutions |
Rear Axle Steering Malfunction Stop Immediately | The rear axle steering is malfunctioning. The rear axle has no steering capability. The steering wheel may be tilted considerably when you drive in a straight line. Depending on the steering wheel’s tilted position, the steering wheel will also vibrate and a continuous warning tone will sound. WARNING Risk of accident if steering capability is impaired If the steering does not function as intended, the vehicle’s operating safety is jeopardized. Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. Consult a qualified specialist workshop. When stopping, bear the enlarged vehicle width in mind. |
| Snow Chain Mode Maxi- mum Speed Exceeded | The maximum permissible speed for snow chain mode has been exceeded. Drive more slowly. |
| Ambient Lighting Warning Support Inoperative | The ambient lighting may not provide full visual warning support. Lock the vehicle and unlock it again after a few minutes. If the display message appears regularly, contact a qualified specialist workshop. |
| Display messages | Possible causes/consequences and M Solutions |
 | At least one door is open. Close all doors. |
 Hood Unlatched Pull Lever Again to Open | The hood is not fully unlocked. WARNING Risk of accident due to driving with the hood unlocked The hood may open and block your view. Never release the hood when driving. Before every trip, ensure that the hood is locked. To open the hood fully, pull the handle again (/ page 404). |
Hood Not Locked Close Before Starting Trip | The hood is not locked. WARNING Risk of accident due to driving with the hood unlocked The hood may open and block your view. Never release the hood when driving. Before every trip, ensure that the hood is locked. Close the hood (/ page 404). |
| Display messages | Possible causes/consequences and M Solutions |
Stop Immediately Close Hood Completely | The hood is not locked. WARNING Risk of accident due to driving with the hood unlocked The hood may open and block your view. Never release the hood when driving. Before every trip, ensure that the hood is locked. Stop the vehicle immediately in accordance with the traffic conditions. Close the hood (/ page 404). |
| The hood is open. WARNING Risk of accident due to driving with the hood unlocked The hood may open and block your view. Never release the hood when driving. Before every trip, ensure that the hood is locked. Stop the vehicle immediately in accordance with the traffic conditions. Close the hood. |
| Display messages | Possible causes/consequences and M Solutions |
 | The trunk lid is open. DANGER Risk of exhaust gas poisoning Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle interior if the trunk lid is open when the engine is running, especially if the vehicle is in motion. Always switch off the engine before opening the trunk lid. Never drive with the trunk lid open. Close the trunk lid. |
 Add Washer Fluid | The washer fluid level in the washer fluid reservoir has dropped below the minimum. Add washer fluid (/ page 409). |
Intensive Cleaning Activated for 30 Seconds | * Intensive cleaning of the windshield has been activated (/ page 176). |
| Display messages | Possible causes/consequences and M Solutions |
| Windshield Wiper Malfunction | * The windshield wiper is malfunctioning. # Restart the vehicle. If the display message still appears: # Consult a qualified specialist workshop. |
Engine | |
| Display messages | Possible causes/consequences and M Solutions |
| To Switch Off Vehicle Press and Hold Start/Stop Button for at Least 3 Seconds or Press 3 Times | * You have pressed the start/stop button while the vehicle is in motion. # Information about switching off the vehicle while driving (/ page 203). |
 Check Coolant Level See Operator’s Manual | * The coolant level is too low. * NOTE Engine damage due to insufficient coolant # Avoid long journeys with insufficient coolant. # Add coolant (/ page 408). # Have the engine cooling system checked at a qualified specialist workshop. |
| Display messages | Possible causes/consequences and M Solutions |
 Coolant Stop Switch Off Vehicle | * The coolant is too hot. Stop immediately in accordance with the traffic conditions and switch off the vehicle.
# Wait until the engine has cooled down. # Make sure that the air supply to the radiator is not obstructed. # Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the coolant temperature display remains below the red marking. |
| * There is a malfunction in the engine cooling system. # Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the coolant temperature display remains below the red marking. |
Display messages
Possible causes/consequences and M Solutions
- The fuel supply has dropped into the reserve range.
- Refuel.
- The fuel filler cap is not closed correctly or the fuel system is leaking.
- Close the fuel filler cap.
- If the fuel filler cap was already properly closed: Consult a qualified specialist workshop.
Mercedes-Benz 2023 Top Accessories
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Reference Links
View Full User Guide: Mercedes-Benz S-CLASS SEDAN 2023 User Manual
Download Manuals: https://www.mbusa.com/en/owners/manuals
