Switching the hazard warning light system on/off
Press button 
.
. If you operate a turn signal indicator while the hazard warning light system is switched on, only the turn signal lamps on the relevant side of the vehicle will light up.
The hazard warning light system will switch on automatically in the following situations:
The airbag is deployed
The vehicle is heavily braked from a speed of more than 70 km/h to a standstill.
The hazard warning light system will automatically switch off when the vehicle regains a speed of more than 10 km/h after maximum full-stop braking.
The hazard warning light system will work even when the vehicle has been switched off.
Removing the fire extinguisher
WARNING Risk of accident due to an incorrectly secured fire extinguisher in the driver's footwell
A fire extinguisher may impede pedal travel or block a depressed pedal.
This jeopardises the operating and road safety of the vehicle.
The fire extinguisher can be flung around and injure the driver or other vehicle occupants.
Always store and secure the fire extinguisher in the bracket.
Do not remove the fire extinguisher while driving.
Open the clasp of holder 
.
. Remove fire extinguisher from its holder.
from its holder. For vehicles with a swivelling front seat, the retainer with the fire extinguisher is located at the side of the seat base.
Please read the instructions on the fire extinguisher carefully and familiarise yourself with its operation. Have the fire extinguisher refilled after each use and checked every one or two years. It may otherwise fail in an emergency.
Observe the legal requirements of the country in which you are currently driving.
Removing the warning triangle
The warning triangle is located in the stowage compartment in the driver's door.
Take warning triangle out of the stowage compartment.
Removing the first-aid kit (soft sided)
The first-aid kit (soft sided) is located in the stowage compartment in the co-driver door.
Remove first-aid (soft sided) kit from the stowage compartment.
Check the expiry date on the first-aid kit (soft sided) at least once a year. Replace any expired or missing contents.
Observe the legal requirements of the country in which you are currently driving.
QR codes for rescue card
The QR code stickers are affixed to the B-pillar on the driver's and co-driver's side. In the event of an accident, emergency services can use the QR code to quickly determine the corresponding rescue card for your vehicle. The current rescue card contains, in compact form, the most important information about your vehicle e.g. the routing of electric cables.
Further information can be obtained at Mercedes-Benz homepage - rescue card.
Starting assistance and charging the 12 V battery
WARNING Risk of explosion from a frozen battery
A discharged battery may freeze at temperatures slightly above or below freezing point.
During starting assistance or battery charging, battery gas can be released.
Always allow a battery to thaw before charging it or performing starting assistance.
If the warning/indicator lamps do not light up in the instrument cluster at temperatures around or below freezing, it is highly probable that the discharged battery has frozen.
In this case, observe the following points:
do not give the vehicle starting assistance or charge the battery
the service life of a battery that has been thawed may be reduced drastically
the starting behaviour may deteriorate, particularly at low temperatures
it is recommended that you have a thawed battery checked at a qualified specialist workshop
WARNING Risk of explosion during charging process and starting assistance
During the charging process and starting assistance, the battery may release an explosive gas mixture.
Avoid fire, naked flames, creating sparks and smoking.
Make sure there is sufficient ventilation.
Do not lean over a battery.
WARNING Danger of chemical burns from the battery acid
Battery acid is caustic.
Avoid contact with the skin, eyes or clothing.
Do not lean over the battery.
Do not inhale battery gases.
Keep children away from the battery.
Immediately rinse battery acid off thoroughly with plenty of clean water and seek medical attention immediately.
Starting assistance
NOTEDamage caused by numerous or extended attempts to start the engine
Numerous or extended attempts to start the engine may damage the catalytic converter due to non-combusted fuel.
Avoid numerous and extended attempts to start the engine.
Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged, the engine can be jump-started from another vehicle or from a donor battery using jump leads. For this purpose, the vehicle has a jump-start connection point in the engine compartment.
When jump-starting, observe the following points:
The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, starting assistance is to be provided using a donor battery or a starting assistance device.
You may only jump-start the vehicle when the engine and exhaust system are cold.
Do not start the engine if the battery is frozen. Let the battery thaw first.
Starting assistance may only be provided using batteries with a nominal voltage of 12 V.
Only use jump leads that have a sufficient cross-section and insulated terminal clamps.
If the battery is fully discharged, attach the donor battery for a few minutes before attempting to start. This charges the discharged battery a little.
Make sure that the two vehicles do not touch.
Jump leads and further information regarding starting assistance can be obtained at any qualified specialist workshop.
Ensure the following before connecting the jump lead:
The jump leads are not damaged.
Parts of the terminal clamps which are not insulated do not come into contact with other metal parts while the jump leads are connected to the battery.
The jump leads do not touch moving parts when the engine is started and while it is running, such as the V-belt pulley or the fan.
Apply the parking brake.
Vehicles with automatic transmission:
shift the transmission to position 
. Vehicles with manual transmission:
shift to neutral. Switch off all electrical consumers, e.g. audio device, blower.
Switch off the ignition immediately and remove the key.
Open the bonnet More.
Connecting and disconnecting the jump lead
Example: jump-start connection point
Push contact protection cover of the jump-start connection point towards the rear of the vehicle against the spring pressure as far as it will go.
of the jump-start connection point towards the rear of the vehicle against the spring pressure as far as it will go. The jump-start connection point is visible.
Terminal connection diagram
Remove the cover from positive terminal 
of the donor battery.
of the donor battery. Connect the positive terminal clamp of the jump lead to positive terminal of the donor battery, and then to positive terminal 
of the jump-start connection point.
of the donor battery, and then to positive terminal of the jump-start connection point. Connect the negative terminal clamp of the jump lead to negative terminal of the donor battery, and then to earth contact 
of your own vehicle.
of the donor battery, and then to earth contact of your own vehicle. Start the engine of the donor vehicle and run it at idling speed.
Insert the key into the ignition lock, start the engine and let it run for several minutes.
Before disconnecting the jump leads, switch on an electrical consumer in your own vehicle, e.g. the rear window heater or the lighting.
Disconnect the negative terminal clamp of the jump lead from earth contact and then from negative terminal of the donor battery.
and then from negative terminal of the donor battery. Disconnect the positive terminal clamp of the jump lead from positive terminal on the jump-start connection point, and then from positive terminal of the donor battery.
on the jump-start connection point, and then from positive terminal of the donor battery. Contact protection cover is automatically returned forwards to its original position by the spring force and the jump-start connection point is closed.
Position the cover on positive terminal of the donor battery.
of the donor battery. Have the battery checked at a qualified specialist workshop.
Charging the 12 V battery
NOTE Damage to the electronics caused by non-approved charging devices
Charging a fitted battery with a battery charger which has not been approved by Mercedes-Benz can damage the on-board electronics.
Only use a battery charger which has been approved by Mercedes-Benz and which permits charging the battery when it is fitted in the vehicle.
Only charge the battery using the jump-start connection point.
A battery charger specially adapted for Mercedes-Benz vehicles and tested and approved for Mercedes-Benz is available as an accessory.
Further information is available from any Mercedes-Benz Service Centre. Read the operating instructions for your charger before charging the battery.
Recharge the battery more frequently if you use the vehicle mainly for short trips and/or drive at low outside temperatures.
Connect the battery charger to the positive terminal and earth contact in the same order as when connecting the donor battery in the jump-starting procedure.
If a battery is not fitted and not in service, you should charge it every three months. This helps to counteract self-discharging and prevent damage to the battery.
12 V battery care
NOTE Battery discharge due to leakage currents
Dirty battery terminal clamps and battery surfaces cause leakage currents. This can lead to the battery discharging.
Keep the battery terminals and battery surfaces clean and dry.
NOTE Damage to the battery housing due to improper cleaning
If you use cleaning agents containing fuel, these can damage the battery housing.
Do not use cleaning agents containing fuel.
NOTE Damage to the battery due to self-discharge
If dirt gets into the battery cell, the self-discharge of the battery is increased and the battery can be damaged.
Only clean the battery with the cell caps screwed in.
Observe the following points on battery care:
Regularly check the battery terminals and the fastening of the negative cable to the chassis to ensure that they are firmly seated.
Lightly grease the undersides of the battery terminal clamps with acid-resistant grease.
Only clean the battery housing with commercially available cleaning agents.
Notes on electrical fuses
NOTE Electrical fuses
Observe the information in the supplement. You may otherwise fail to recognise dangers.
The fuse allocation chart and the information on the fuses can be found in the "Fuse allocation chart" Supplement.
Notes on flat tyres
WARNING Risk of accident due to a flat tyre
A flat tyre strongly impairs the vehicle's driving characteristics, as well as its steering and braking characteristics.
Do not drive with a flat tyre.
Replace the flat tyre with the spare wheel. Alternatively, consult a qualified specialist workshop.
You will find a sticker with the Mercedes-Benz Service24h telephone number on the B-pillar on the driver's side, for example.
For vehicles with a spare wheel, information in the event of a flat tyre can be found under "Wheels and tyres" More.
Overview of permissible towing methods
WARNING Risk of accident due to limited safety-related functions during the towing process
Safety-related functions are limited or no longer available in the following situations:
the ignition is switched off.
the brake system or power steering system is malfunctioning.
the energy supply or the on-board electrical system is malfunctioning.
When your vehicle is then towed away, significantly more effort may be required to steer and brake than is normally required.
Use a tow bar.
Make sure that the steering wheel can move freely before towing the vehicle away.
WARNING Risk of accident when towing with steering wheel lock
You will no longer be able to steer the vehicle if the steering wheel lock is engaged.
Always switch on the ignition when towing the vehicle with a tow cable or a tow bar.
WARNING Risk of accident due to towing away a vehicle that is too heavy
If the vehicle being tow started or towed away is heavier than the permissible gross weight of your vehicle, the following situations may arise:
The towing eye may become detached.
The vehicle/trailer combination may even tip over.
Before tow starting or towing away a vehicle, check that it does not exceed the permissible gross weight.
Details on the permissible gross vehicle weight of your vehicle can be found on the vehicle identification plate More.
NOTE Damage to the vehicle due to automatic braking
When the following functions are activated, the vehicle brakes automatically in certain situations:
Active Brake Assist
Active Distance Assist DISTRONIC
HOLD function
To avoid damage to the vehicle, deactivate these systems in the following or similar situations:
when towing
in a car wash
NOTE Damage due to incorrect connection of the tow bar or improper use of the towing device
Only connect the tow rope or tow bar to the towing eyes or the trailer tow hitch.
Do not use the towing eyes to recover a vehicle.
NOTE Damage due to pulling force being too high
Pulling away abruptly can damage the vehicles if the tractive forces are too high.
Pull away as straight, slowly and smoothly as possible.
NOTE Damage due to improper towing with a tow rope
If you ignore safety and protective measures when towing with a tow rope, this can result in damage to the vehicle.
Observe the following points:
Secure the tow rope on the same side on both vehicles.
Secure the tow rope to the towing eyes.
Do not exceed the legally prescribed length of the tow rope.
Mark the tow rope in the middle, e.g. with a white cloth (30 x 30 cm). This will make other road users aware that a vehicle is being towed.
During the journey, observe the brake lamps of the towing vehicle and maintain the distance so that the tow rope does not sag.
Do not use steel cables or chains to tow your vehicle.
NOTE Damage due to towing the vehicle at too high a speed or too far
Towing the vehicle at too high a speed or too far can damage the drivetrain.
Do not exceed a towing speed of 50 km/h.
Do not exceed a towing distance of 50 km.
NOTE Damage to the automatic transmission when towing due to shifting into transmission position
If you open the driver's or co-driver's door when towing, it can lead to the automatic transmission shifting to position and becoming damaged.
Shift the automatic transmission to position 
.
. Do not open any doors during the towing process.
When towing away, you must observe the legal requirements for the country in which you are currently driving.
In the event of a breakdown, Mercedes-Benz recommends that you have the vehicle transported instead of towed.
Have the vehicle transported on a transporter or trailer if it has transmission damage.
 Both axles on the ground |  Front axle raised |  Rear axle raised | |
|---|---|---|---|
Vehicles with manual transmission | Yes, no further than 50 km at 50 km/h | No | Yes, if the steering wheel is fixed in the centre position with a steering wheel lock. Maximum 50 km at 50 km/h |
Vehicles with automatic transmission | Yes, no further than 50 km at 50 km/h | No | Yes, if the steering wheel is fixed in the centre position with a steering wheel lock. Maximum 50 km at 50 km/h |
Vehicles with all-wheel drive (4MATIC) | Yes, no further than 50 km at 50 km/h | No | No |
If the transmission cannot be shifted to position , have the vehicle transported More. A towing vehicle with lifting equipment is required for vehicle transport.