Mercedes-Benz GLS 2018 Operator's Manual
![Mercedes-Benz GLS 2018 manual cover](/images/be83dc7a5401d3b16d7dfd13/thumbs/thumb175x175.webp)
To reset the maintenance light, turn the ignition to position 1. Use the left arrow button on the steering wheel to navigate to the 'Trip' menu. Hold the phone button and the 'OK' button simultaneously until the workshop menu appears. Select 'Assist Plus', then 'Full Service', and finally 'Confirm'.
The 2018 Mercedes-Benz GLS typically requires synthetic oil with a viscosity of 0W-40 or 5W-40 that meets the MB 229.5 or MB 229.51 specifications. Refer to the owner's manual for precise recommendations.
To connect your phone via Bluetooth, ensure Bluetooth is enabled on your phone. On the infotainment system, navigate to 'Telephone', then select 'Connect Device'. Follow the prompts to pair your phone by confirming the PIN displayed on both devices.
The recommended tire pressure for the 2018 Mercedes-Benz GLS is typically 36 psi for the front tires and 39 psi for the rear tires. Always refer to the sticker on the driver's side door jamb for the most accurate information.
To change the cabin air filter, locate the filter housing under the passenger side dashboard. Remove the cover by loosening the clips or screws, take out the old filter, and insert a new one, ensuring the airflow arrows point in the correct direction. Reattach the cover.
Updates for the navigation system can be performed by visiting a Mercedes-Benz dealership or through the Mercedes-Benz website, where you can download updates to a USB drive and install them via the vehicle's USB port.
If the engine won't start, check the battery for sufficient charge. Ensure the gear is in 'Park' or 'Neutral'. Verify fuel levels and inspect fuses related to the ignition system. If issues persist, consult a professional technician.
To replace the headlight bulb, open the hood and locate the back of the headlight assembly. Remove the cover, disconnect the wiring harness, and take out the old bulb. Insert the new bulb without touching the glass, reconnect the wiring, and replace the cover.
The 2018 Mercedes-Benz GLS has a towing capacity of up to 7,500 pounds when properly equipped. Ensure you are using the appropriate towing equipment and following all guidelines in the owner's manual.
Software updates for the COMAND system can be done by visiting a Mercedes-Benz dealership. Some updates may also be available via a USB drive that can be inserted into the vehicle's USB port for installation.