Repairing a tyre

Preparations

– If you have a flat tyre, stop the car well away from moving traffic.
– Apply the parking brake to stop the vehicle moving accidentally.
– Engage first gear (manual gearbox) or move selector lever to position P (automatic gearbox).
– Check whether a repair is possible using the Tyre Mobility System.
– Ensure that all passengers leave the vehicle and move away from the danger area ⇒ .
– Take the tyre sealant can and the electric compressor out of the luggage compartment ⇒ page 283.
– Fix the sticker “max. 80 km/h”, which is included with the tyre sealant can, onto the instrument cluster where the driver will see it.

Filling the tyre

– Shake the tyre sealant can well.
– Screw the enclosed filling hose onto the sealant can as far as it will go. This will automatically pierce the foil sealing the can.
– Take the valve cap off the tyre valve and use the enclosed valve insert tool to unscrew the valve insert, fig. 270.
– Place the valve insert onto a clean surface.
– Remove the sealing plug from the filling hose and insert the hose into the tyre valve.
– Hold the tyre sealant can upside down and fill the complete contents of the can into the tyre.
– Then disconnect the hose and screw the valve insert firmly back into the tyre valve.

Inflating the tyre

– Screw the filling hose of the electric compressor onto the tyre valve and plug the connector into the cigarette lighter.
– Pump the tyre up to 2.0 to 2.5 bar and monitor the pressure shown on the pressure gauge.
– If the tyre pressure remains lower than the value specified above drive the vehicle approx. 10 metres forwards or backwards, so that the sealant can spread evenly in the tyre. If the pressure is still lower than the specification the tyre is too badly damaged and cannot be repaired using the tyre sealant.

Final checks

– After about 10 minutes stop to check the tyre pressure.
– If tyre pressure is less than 1.3 bar, the tyre is too badly damaged. Do not drive on. You should obtain professional assistance.

WARNING

• • If you have a puncture in moving traffic, switch on the hazard warning lights and place the warning triangle in a visible location. This is for your own safety and also warns other road users.
• • Make sure your passengers wait in a safe place (for instance behind the roadside crash barrier).
• • Please observe the manufacturers' safety notes on the compressor and the instructions supplied with the tyre sealant can.
• • If it was not possible to build up a tyre pressure of 2.0 bar within 6 minutes this means that the tyre is too badly damaged. Do not drive on.
• • Seek professional assistance if the repair of a tyre puncture is not possible with the sealing compound.
• • If tyre pressure is less than 1.3 bar after driving about 10 minutes, the tyre is too badly damaged. Do not drive on. You should obtain professional assistance.

Caution

Take special care if you have to repair a tyre on a gradient.

Note

• • Do not use the compressor for longer than 6 minutes at a time, as it could overheat. When the compressor has cooled down, you can use it again.
• • If tyre sealant should leak out, leave it to dry and then pull it off like foil.
• • After carrying out a tyre repair remember to buy a new tyre sealant can at a qualified workshop. This will ensure that the Tyre Mobility System is operative again.
• • Please observe the relevant regulations.