Engineering Analysis · Closed
BRAKE LIGHT SWITCH FAILURE
Manufacturer: Land Rover
This investigation led to a recall
NHTSA links this probe to recall campaign 07V041000.
Read the recall: what is defective and the free fix →What NHTSA is examining
On june 16, 2005, the office of defects investigation (odi) opened a preliminary evaluation (pe05-034) to investigate alleged stop lamp (brake) switch failures in certain model year (my) 2004 land rover discovery series ii vehicles.on october 14, 2005, the investigation was upgraded to an engineering analysis and the scope expanded to include certain my 2002 through 2005 freelander vehicles that use a substantially similar self-adjusting stop lamp switch furnished by the same supplier, methode electronics malta, ltd. (methode).in september 2003, methode moved the production of an internal switch component, known as the slider mechanism, from a validated plastic injection-molding tool (?cavity 1?) to another tool (?cavity 2?) that had not been used before to produce parts for land rover.sliders from cavity 2 may be characterized by poor fill, lack of definition in the slider teeth and dimensional instability.consequently, the slider may be unable to restrain improper movement of the plunger during normal brake pedal operation.this may cause the switch to fall out of adjustment, thus significantly reducing the effort required to energize the switch and illuminate the stop lamps.?cavity 2? Switches were installed in approximately 8,763 discovery subject vehicles built from december 2003 through may 2004 and approximately 3,915 freelander subject vehicles built from october 2003 through may 2004.additionally, stop lamp switches in certain my 2002 through 2005 freelander subject…
Vehicles under investigation
Source: NHTSA Office of Defects Investigation records, updated daily. An investigation is not a determination that a defect exists; many probes close without a recall.