| General notes on ignition system |
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| The battery must be disconnected only with ignition switched off. If a coded radio is installed, ascertain code before disconnecting battery. |
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| For trouble-free operation of electrical components, a voltage of at least 11.5 V is necessary. |
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| After completing work, read event memory of engine control unit. Clear all events that may have been recorded while checks and repairs were carried out. If the event memory was cleared, the readiness code must be generated → Vehicle diagnostic tester„Guided functions“. |
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| If, after fault finding, repairs or component tests, the engine starts, runs for a short period and then stops, then the fault may be that the immobiliser is blocking the engine control unit. In this case, the control unit must be adapted → Vehicle diagnostic tester„guided functions“. |
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