Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Instructions for Removing the Expansion Tank

Model: BMW Serie 3 E46 - Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Part: Antifreeze coolant

See other generations:
Video tutorial

To perform this maintenance, ensure the engine is cold since you need to drain the coolant: first, remove the splash shield from under the hood, unscrew the drain screws of the cooling system (these are the blue plastic ones under the radiator) and let the coolant flow out; disconnect the hoses from the expansion tank by removing the retaining clips; re-screw the drain screws, remove the retaining clip of the tank at the radiator located at the bottom, and pull it out of its seat by lifting it up (removing the fan makes this easier).


Updated on 13 February 2026 by ScegliAuto


Related tutorials

Instructions for Disassembling the Drive Shaft
Instructions for Disassembling the Drive Shaft
BMW Serie 3 (1998-2006 / E46) To disassemble the drive shaft, lift the vehicle on a lift and first remove the exhaust pipe. Once the muffler is removed, take off the heat shield t…
Instructions for Removing the Exhaust System
Instructions for Removing the Exhaust System
BMW Serie 3 (1998-2006 / E46) If you need to remove the exhaust system, it is advisable to let the system cool completely and position the vehicle on car ramps if you do not have …
Instructions for Removing Rear Seats
Instructions for Removing Rear Seats
BMW Serie 3 (1998-2006 / E46) Removing the rear seats is extremely simple. Start by removing the center armrest, which must be flipped up and then pulled out from its housing. Nex…

Other guides you may be interested in

How to Open the Fuel Filler Flap in the Hyundai i30?

In this tutorial, you will learn how to open the fuel filler flap in the Hyundai i30, a very simple operation that follows the typical procedure of most vehicles. First, unlock the locks using the designated button on the remote, then open the driver's door, locate the release lever on the left side of the seat, and operate it. Next, move to the fuel filler flap, open it completely, unscrew the cap, and refuel as needed. To close the flap, simply press it gently.

Watch the video!


by ScegliAuto

More videos