| When working on the fuel system note the following warnings: |
WARNING | Risk of injury - fuel system operates under high pressure. |
| Wrap a clean cloth around the connection and carefully loosen the connection to release the fuel pressure. |
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| Observe the following to prevent injuries to persons and damage to the injection and ignition system: |
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| Always switch off the ignition before connecting or disconnecting electrical wiring for the injection or ignition system or tester cables. |
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| Always switch off ignition before washing engine. |
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| Faults are stored in engine control unit if electrical connectors have been unplugged: |
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| Connect vehicle diagnostic, testing and information system -VAS 5051B-. |
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| Start “Self-diagnosis” mode. |
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| Generate readiness code in engine control unit. |
Caution | To prevent damage to the electronic components when disconnecting the battery: |
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| Observe notes on procedure for disconnecting the battery. |
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| Always switch off the ignition before disconnecting the battery. |
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| When working on the cooling system note the following warnings: |
WARNING | Hot steam/hot coolant can escape - risk of scalding. |
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| The cooling system is under pressure when the engine is hot. |
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| To allow pressure to dissipate, cover filler cap on expansion tank with cloth and open carefully. |
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| Note the following if testers and measuring instruments have to be used during a road test: |
WARNING | Persons sitting in the front passenger's seat could be seriously injured if the airbag is triggered. |
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| Test equipment must always be secured on the rear seat and operated from that position by a second person. |
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| If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, the person sitting in this seat could be seriously injured when the airbag is triggered. |
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