64 12 015 Removing and installing complete heater (Thermo Top Z/C)

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

Remove front left wheel. See 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL

Remove front left wheel arch lining. See 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER

WARNING: Danger of scalding!
Only perform this work after engine has cooled down.

Disconnect plug connections (1).

Disconnect supply, return and fuel hoses.

Loosen hose clamps (2).

Detach water hoses (3) and fuel hose (4).

Fig 1: Detaching Water & Fuel Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws or expansion rivets and remove floor trim.

Fig 2: Removing Floor Trim

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws (1).

Release pipe clamp (2).

Separate exhaust pipe (3) from exhaust manifold (4).

Move heater (5) in direction of arrow and remove.

Installation:

Replace rubber grommets if necessary.

Top up coolant and vent cooling system.

Fig 3: Separating Exhaust Pipe From Exhaust Manifold

Courtesy of BMW OF NORTH AMERICA, INC.