1. Before filling the cooling system, check the condition of all hoses and their clamps. Note that antifreeze must be present in the system all year round to prevent corrosion of engine components (see chapter 5).
2. On models 1.4 and 1.6 l (except C16 NZ2) Disconnect the wire and unscrew the coolant temperature sensor from the intake manifold.
3. Remove the expansion tank cap and prime the system by slowly pouring recycled coolant to avoid air pockets.
4. If the coolant is being replaced, first fill in about a liter of water, then the required amount of antifreeze (based on the total volume of liquid) (see chapter 5), then pour in the rest of the water.
5. On models 1.4 and 1.6 l (except C16 NZ2) install the coolant temperature sensor (after air-bubble-free coolant begins to pour out of the hole in the intake manifold).
6. Bring the coolant level to the mark "COLD" (or "KALT") on the expansion tank, then install the tank cap.
7. Start the engine and let it warm up to normal operating temperature, then stop it and let it cool.
8. Check the system for leaks, especially around previously disconnected components. Check the coolant level in the expansion tank and top up if necessary. Please note that the exact fluid level can only be determined after the system has cooled down. If the expansion tank cap must be removed while the engine is still warm, wrap the cap with a thick cloth and slowly unscrew it, gradually depressurizing the system. Watch out for hot steam or liquid splashing out of the system.
9. On models with two overhead camshafts, install the lower engine protection plate.
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