Bleeding The Cooling System
WARNING: This page is about a different variant/trim than selected.
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- Always follow the instructions on the Tester.
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- There is no need to create a Vehicle Analysis Log (VAL).
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- Before bleeding the low-temperature system, the system must always have been drained, vacuumed and filled correctly beforehand.
- Simply bleeding the system using the test procedure will not resolve the problem if air is getting into the system or if the engine coolant level is too low.
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The bleeding process ends automatically after 20 minutes.
- Connect a battery charger.
- During the Tester routine and warm-up phase, check the engine oil temperature and coolant temperature on the instrument cluster.
The Tester does not monitor the temperatures automatically!
If the temperatures are too high, cancel the process manually!
- Connect the PIWIS Tester to the vehicle and switch on the PIWIS Tester .
- Switch on the ignition.
- Start diagnostics.
- Select Thermal management control unit.
- Select the Maintenance/repairs tab.
- Select the Low-temperature system menu item and press F12 to continue.
- Follow the instructions on the Tester.
- Check engine coolant level and correct it if necessary.
- Read out the fault memories of all control units, work through any fault entries and then clear the fault memories.
- Remove battery charger.
- Test-drive the vehicle and then check the engine coolant level in the reservoir.