64 12 700 Removing and installing/replacing latent heat accumulator

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.

When replacing, flush cooling system due to salt leaks.

Remove A-pillar trim from right footwell and remove right rocker strip. See 51 47 000 REMOVING AND INSTALLING / REPLACING THE FRONT (INSIDE) LEFT OR RIGHT ROCKER PANEL STRIP

Remove right glovebox. See 5116 361 REPLACE RIGHT GLOVEBOX

Remove entrance cover strip at front right.

Release screw and pull side carpet on right in direction of arrow out of retainers.

Fig 1: Removing Right Side Carpet

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Cut open carpet floor as far as possible under heater and fold back in direction of arrow.

Fig 2: Removing Floor Carpet

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Release screws and raise lines in direction of arrow.

CAUTION: If necessary, catch escaping coolant with cleaning cloth or receptacle.

Installation:

Replace sealing rings.

Fig 3: Releasing Screws & Raising Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Unhook holder in direction of arrow.

Lift out latent heat accumulator as vertically as possible to prevent coolant from escaping from accumulator.

Fig 4: Removing Latent Heat Accumulator

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Prior to installation, prefill latent heat accumulator with coolant. To do so, place accumulator in vertical position.

Insert funnel and hose in a lead and seal (e.g. with Terostat tape). Carefully fill system with coolant. The coolant is forced through the latent heat accumulator by the generated head of water. Continue adding coolant until it emerges from the other line.

Reinstall latent heat accumulator as vertically as possible.

Vent latent heat accumulator after installation.

Fig 5: Installing Latent Heat Accumulator

Courtesy of BMW OF NORTH AMERICA, INC.