| Tyre pressure control indicator (RKA+ function) |
| The tyre control system is a function incorporated into the ABS control unit -J104- software. It detects the gradual reduction of the tyre pressure of a wheel. The irregularity linked with the tyre pressure monitoring display is registered in the memory of the ABS control unit -J104-. The tyre pressure monitor display compares the wheel speeds and consequently the rolling circumferences of the individual wheels with the help of the ABS speed sensors. |
| After the following work or modifications, the tyre pressure monitor display button -E492- must be pressed and held until a confirmation is sounded. |
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| Changing the tyre pressure |
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| Changing one or more wheels |
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| Swapping the wheels, e.g the front ones with the back ones |
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| Removing and fitting one or more wheels |
| A change in a wheel's rolling circumference will be indicated by the tyre pressure monitor warning lamp -K220- lighting up in the dash panel insert. A tyre's rolling circumference may change as a result of: |
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| Insufficient tyre inflation pressure. |
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| Structural tyre damage. |
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| One-sided loading of vehicle |
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| Increased load on one axle, e.g. due to towing a trailer |
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| Temporary spare wheel installed |
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