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| Coolant temperature less than 30° C |
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| Ambient temperature less than 25° C |
Note | A higher ambient temperature can lead to errors as regards measured fuel quantity on account of fuel evaporation. |
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| Sufficient fuel in tank (fuel gauge in dash panel insert not in red zone) |
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| Battery -A- fully charged |
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| Auxiliary heater fully installed and connected to vehicle electrical system |
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| Auxiliary heater switched off |
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