Mercedes-Benz CLS 2012 Operator's Manual
![Mercedes-Benz CLS 2012 manual cover](/images/8b48091355223fef2d957c87/thumbs/thumb175x175.webp)
To reset the tire pressure monitoring system, turn on the ignition without starting the car. Use the steering wheel controls to navigate to the 'Service' menu on the dashboard display, then select 'Tire Pressure' and follow the prompts to reset the system.
Mercedes-Benz recommends using a fully synthetic 5W-40 engine oil that meets the MB 229.5 specification for the 2012 CLS. Always check your owner's manual or consult with a dealer for the best option.
To pair your smartphone, activate Bluetooth on your phone. On the vehicle's COMAND system, select 'Telephone', then 'Connect Device'. Search for available devices on your phone and select 'MB Bluetooth'. Enter the passkey displayed on the screen to complete the pairing.
The recommended maintenance schedule includes service intervals at 10,000 miles or 1 year, whichever comes first. This includes an oil change, filter replacement, brake check, and fluid top-offs. It's best to follow the maintenance booklet provided by Mercedes-Benz for detailed guidelines.
A squealing noise when braking is often due to worn brake pads or rotors. It might also be caused by debris caught between the pad and rotor. It's advisable to have your brakes inspected by a qualified mechanic to prevent further damage.
To replace the key fob battery, slide the release at the back of the fob to remove the metal key. Then, pry open the key fob casing with a small screwdriver. Replace the old battery with a new CR2025 battery, ensuring the polarity is correct, and snap the casing back together.
The check engine light may illuminate due to various issues such as a loose gas cap, faulty oxygen sensor, or issues with the catalytic converter. It's best to use an OBD-II scanner to read the trouble codes or visit a mechanic for a proper diagnosis.
To update the navigation system, visit the Mercedes-Benz navigation update website to purchase the latest map update. You will receive a USB drive with the update files. Insert it into the vehicle’s USB port and follow the on-screen instructions to complete the update.
Common causes of battery drain include leaving lights on, faulty electrical components, or a malfunctioning alternator. Ensure all lights and electronic devices are off when the car is parked and have a mechanic inspect the electrical system if the issue persists.
To improve fuel efficiency, ensure regular maintenance like timely oil changes and air filter replacements. Keep tires properly inflated, drive at steady speeds, and avoid rapid acceleration or heavy braking. Removing excess weight and using cruise control on highways can also help.