17 00 515 Checking function of radiator and heating system

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

13 3 010

WARNING: Danger of scalding! Only carry out work on cooling system after engine has cooled down.

Necessary preliminary tasks:

Switch off ignition.
Remove air duct.
Remove fan cowl with electronic fan.

Check production date.

Fig 1: Locating Vehicle Manufacture Date

Courtesy of BMW OF NORTH AMERICA, INC.

Clamp off low-temperature feed lines with special tool 13 3 010. Function test: Observe diagnosis instructions.

Fig 2: Identifying Coolant Hose

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Check function of radiator.

Clamp off low-temperature feed line (1) at coolant pump outlet or radiator inlet with special tool 13 3 010 (see arrows).

Fig 3: Identifying Low-Temperature Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

Automatic transmission only Check function of heat exchanger.

Clamp off low-temperature feed line (1) at coolant pump outlet with special tool 13 3 010 (see arrow).

Clamp off low-temperature feed line (2) at oil-coolant heat exchanger with special tool 13 3 010 (see arrow).

Fig 4: Identifying Low-Temperature Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.