BMW part number 61311369275 is a Heated Rear Window (Rear Defrost) Switch. Its fitment cutoff dates revolve around major chassis updates and electrical transitions during BMW's late-1970s and 1980s lineup—specifically the E24 6-Series coupe and early E23 7-Series. (17k)
In the United States market, this switch is used exclusively on early E24 6-Series and select E23 7-Series vehicles up until a September 1982 cutoff.
- 6-Series Models: 630CSi (1977–1978) and 633CSi (1978–1982).
- 7-Series Models: Early 733i variants built between 1978 and 1982.
- US Cutoff Date: September 1982 (09/1982).
- The Reason: For the 1983 model year, BMW migrated the E24 6-Series away from its original E12-based suspension/electrical architecture onto the newer E28-based chassis platform. Along with this "Chassis Changeover," the interior dashboard switches were fundamentally converted from early style mechanical pull-toggles to smaller rectangular rockered push-switches.
For the European market, this switch spans a broader collection of engine trims but adheres to the exact same September 1982 electrical generation cutoff.
- 6-Series Models: Euro 628CSi, 630CS, 633CSi, and early 635CSi.
- 7-Series Models: Euro E23 728, 728i, 730, 732i, 733i, and early 735i.
- European Cutoff Date: September 1982 (09/1982).
- The Reason: Much like the US models, European production phased out the old style central dashboard switch pod in September 1982 to streamline parts manufacturing with the introduction of newer interior console fascias.
Will this switch fit an M6? The Lone Exception is the European 1984 E24 M635CSi that had an older left-over interior panel trim configuration retrofitted from the factory transition era. For any standard US-delivery M6, it's completely incompatible.
