BMW 3: Coolant

General information

Coolant consists of water and additives.

Not all commercially available additives are suitable for the vehicle. Information about suitable additives is available from a dealer's service center or another qualified service center or repair shop.

Safety information

Warning With the engine hot and the cooling system open, coolant can escape and lead to scalding.

There is a risk of injury. Only open the cooling system with the engine cooled down.

Warning Additives are harmful and incorrect additives can damage the engine. There is a risk of injury and risk of damage to property. Do not allow additives to come into contact with skin, eyes or articles of clothing. Use suitable additives only.

Coolant level

General information

Vehicles with 30i or 40i gasoline engine feature two cooling circuits. Always check the coolant levels of both coolant reservoirs and refill as needed.

The coolant level is indicated using minimum and maximum markings in the filler neck of the coolant reservoir.

Checking the coolant level

1. Let the engine cool.

2. Open the hood.

3. Turn the lid of the coolant reservoir slightly counterclockwise to allow any excess pressure to dissipate, then open it.

4. Open the coolant reservoir lid.

5. The coolant level is correct if it lies between the minimum and maximum marks in the filler neck.

6. Close the lid.

Adding

1. Let the engine cool.

2. Open the hood.

3. Turn the lid of the coolant reservoir slightly counterclockwise to allow any excess pressure to dissipate, then open it.

4. Open the coolant reservoir lid.

5. If the coolant is low, slowly add coolant up to the specified level; do not overfill.

6. Close the lid.

7. Have the cause of the coolant loss eliminated as soon as possible.

Disposal

Comply with the relevant environmental protection regulations when disposing of coolant and coolant additives.

READ NEXT: