General information
When using run-flat tires or a flat tire kit, a wheel does not always need to be changed immediately when there is a tire pressure loss due to a flat tire.
If needed, the tools for changing wheels are available as accessories from a dealer's service center or another qualified service center or repair shop.
Safety information
Warning
The vehicle jack is only provided for short-term lifting of the vehicle for wheel changes. Even if all safety measures are observed, there is a risk of the raised vehicle falling, if the vehicle jack tips over. There is a risk of injury or danger to life. When the vehicle is raised with the vehicle jack, do not lie under the vehicle and do not switch on the drive-ready state.
Warning
Supports such as wooden blocks under the vehicle jack reduce the capacity of the vehicle jack to bear weight. They have the potential to exert too much strain on the vehicle jack, causing it to tip over and the vehicle to fall. There is a risk of injury or danger to life. Do not place supports under the vehicle jack.
Warning
The jack, issued by the vehicle manufacturer, is provided in order to perform a wheel change in the event of a breakdown. The jack is not designed for frequent use; for example, changing from summer to winter tires. Using the jack frequently may cause it to become jammed or damaged. There is a risk of injury and risk of damage to property. Only use the jack to attach an emergency or spare wheel in the event of a breakdown.
Warning
On soft, uneven or slippery ground, for example snow, ice, tiles, etc., the vehicle jack can slip away. There is a risk of injury. If possible, change the wheel on a flat, solid, and slip-resistant surface.
Warning
The vehicle jack is optimized for lifting the vehicle and for the jacking points on the vehicle only. There is a risk of injury. Do not lift any other vehicle or cargo using the vehicle jack.
Warning
When the vehicle jack is not inserted into the jacking point provided for this purpose, the vehicle may be damaged or the vehicle jack may slip when it is being cranked up. There is a risk of injury or risk of damage to property. When cranking up the vehicle jack, ensure that it is inserted in the jacking point next to the wheel housing.
Warning
A vehicle that is raised on a vehicle jack may fall off of the jack if lateral forces are exerted on it.
There is a risk of injury and risk of damage to property. While the vehicle is raised, do not exert lateral forces on the vehicle or pull abruptly on the vehicle. Have a stuck wheel removed by a dealer's service center or another qualified service center or repair shop.
Securing the vehicle against rolling
General information
The vehicle manufacturer recommends to additionally secure the vehicle against rolling away when changing a wheel.
On a level surface
Place wheel chocks or other suitable objects in front and behind the wheel that is diagonal to the wheel to be changed.
On a slight downhill gradient
If you need to change a wheel on a slight downhill grade, place chocks and other suitable objects, for instance rocks, under the wheels of both the front and rear axles against the rolling direction.
Lug bolt lock
Principle
The wheel lug bolts have a special coding. The lug bolts can only be released with the adapter which matches the coding.
Overview
The adapter of the lug bolt lock is in the onboard vehicle tool kit or in a storage compartment close to the onboard vehicle tool kit.
Unscrewing
1. Attach the adapter to the lug lock bolt.
2. Unscrew the lug lock bolt.
3. Remove the adapter after unscrewing the lug bolt.
Screwing on
1. Attach the adapter to the lug lock bolt. If necessary, turn the adapter until it fits on the lug lock bolt.
2. Screw on the lug lock bolt. The tightening torque is 101 lbs ft/140 Nm.
3. Remove the adapter and stow it after screwing on the lug bolt.
Preparing the vehicle
Jacking points for the vehicle jack
The jacking points for the vehicle jack are located at the indicated positions.
Jacking up the vehicle
Warning
Hands and fingers can be jammed when using the vehicle jack. There is a risk of injury. Comply with the described hand position and do not change this position while using the vehicle jack.
1. Hold the vehicle jack with one hand, arrow 1, and grasp the vehicle jack crank or lever with your other hand, arrow 2.
2. Insert the vehicle jack into the rectangular recess of the jacking point closest to the wheel to be changed.
3. Extend the vehicle jack by turning the vehicle jack crank or lever clockwise.
4. Take your hand away from the vehicle jack as soon as the vehicle jack is under load and continue turning the vehicle jack crank or lever with one hand.
5. Make sure that the vehicle jack foot stands vertically and at a right angle beneath the jacking point.
6. Make sure that the vehicle jack foot stands vertically and perpendicularly beneath the jacking point after extending the vehicle jack.
7. Crank the vehicle up, until the vehicle jack is with the entire surface on the ground and the relevant wheel is maximum 1.2 inches/3 cm above ground.
Mounting a wheel
Warning
Unsuitable wheel studs, such as single-section wheel studs, may loosen or come off. The wheel may come loose during driving. There is a risk of accident. Use only two-section wheel studs that have been categorized as suitable for the respective wheel type by the manufacturer of the vehicle.
Mount one emergency wheel only, as required.
1. Unscrew the lug bolts.
2. Remove the wheel.
3. Put the new wheel or emergency wheel on and screw in at least two lug bolts in a crosswise pattern until hand-tight.
When non-original light-alloy wheels of the vehicle manufacturer are mounted, the accompanying lug bolts may have to be used as well.
4. Hand-tighten the remaining lug bolts and tighten all lug bolts well in a crosswise pattern.
5. Turn the vehicle jack crank counterclockwise to retract the vehicle jack and lower the vehicle.
6. Remove the vehicle jack and stow it securely.
After the wheel change
1. Tighten the lug bolts crosswise. The tightening torque is 101 lbs ft/140 Nm.
2. Stow the nonworking wheel in the cargo area, if necessary.
3. Check tire inflation pressure at the next opportunity and correct as needed.
4. Reinitialize the Flat Tire Monitor.
Reset the Tire Pressure Monitor again.
5. Check to make sure the lug bolts are tight with a calibrated torque wrench.
6. Have the damaged tire replaced at the nearest dealer's service center or another qualified service center or repair shop.