Heater valve, replace

# Heater valve, remove and install.

Heater valve should be fully open with no power and fully closed with 12 Volts supplied.
Remove negative cable from battery. |

#### Non air bag equipped:

Remove three 1/4 turn screws along top edge of panel and one below the steering column |
Pull panel forward and out. Remove chime module from bracket in panel by pulling back tabs. |

#### Air bag equipped:

Remove the four 7 mm hex head screws from bottom edge of trim panel. |
Remove the three Phillips screws securing trim panel to dash. Remove trim panel. |
Pull horizontal panel down and forward. Remove chime module wiring connectors or entire module by spreading the plastic clips securing it to the panel. |
Remove the knee bolster by removing two 10mm bolts on left and three 10mm bolts on right side of bolster. |

#### All:

Remove rear console ashtray by opening, then lifting straight up, remove 10mm nut (arrow) below ashtray. |
Rigid boot: Pull up front of park brake cover and slide off handle. Leather boot: Pull up front to release boot, feed boot through opening in console. |
Pull rear section of console back to disengage it from front section. Lift up at front and slide over parking brake lever. |
Squeeze edges of shift boot in and lift up. |
Pull boot up far enough to access wiring for lighted shift knob (if fitted) and unplug connector. |
Pull shift knob straight up to remove. A sharp tug is required. |
Remove insulation pad from around shifter (if fitted). |
Remove power window switches and power window circuit breaker by lifting straight up. Tight switches can be removed by placing fingers inside shift hole and pushing up. |
Remove 10mm nut from behind shifter, holding rear of console section to floor. |
Remove front ashtray by opening, then pulling straight up. |
Remove the two screws forward of the ashtray (arrows) and lift out the ashtray / lighter assembly. |
Unplug lighter and illumination bulb. |
Remove bolt from below heater slides. Position shown in mirror. |
Turn screw on left side of console, by firewall, 90° and remove. |
Repeat on right side of console. |
Pull front section of console up and to the rear to remove. |
Drain coolant and disconnect heater hoses. (arrows) |
Remove screw holding duct to heater housing on left side and remove duct. |
On early cars, which have heater ducts under the front seats for the rear foot wells, you must also remove the concertina vent hose. |
Remove Torx T20 screw from clamp on heater pipes forward heater valve. |
Remove wiring connector from water valve. |
Remove bolts securing inlet pipe to heater valve. |
Remove 3 bolts securing valve and outlet pipe to heater core pipes. |
Disconnect the pipes and rotate the bracket away from the outlet pipe. |
Remove valve. |

### Installation:

Replace all O rings that are exposed during the procedure. |

#### Non air bag equipped:

Ensure rear edge of panel locates correctly in bracket on steering column. |

####
Air bag equipped:

Mount bolster first. |
Ensure rear edge of horizontal panel seats in clip on center console. |
Loosely insert the four 7 mm hex head screws through horizontal panel into bolster.
Trim panel is slotted on bottom edge to allow it to be inserted past the screws. Line up trim panel and install screws along upper edge first, tightening the hex screws along bottom edge last. |

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson