Body, generic

B00BA Driver Seat Occupant Position Sensor D

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B00BA covers position input D, the fourth of the driver seat sensors. Its use by a carmaker is not documented publicly. Early out-of-position concepts mixed several sensor kinds: a 1989 Automotive Systems Laboratory patent uses a pyroelectric detector for presence, ultrasound for the distance to wheel and dashboard and a pressure transducer under the occupant for weight, recommends redundant sensors of each kind against false readings, warns the occupant with a lamp and fires a multi-cartridge driver inflator step by step to match size and position. A fourth slot thus suits a redundant sensor or one working on another principle, but no maker confirms what D stands for. B00BA indicates a fault in that input; the warning lamp for the airbags lights and position-based staging is limited.

Likely causes

Open or shorted lead to position sensor D
Signal disagreeing with the other position inputs, e.g. sensor dirty or misaligned
Internal fault of position sensor D

Symptoms

  • Airbag warning lamp on
  • Staged driver airbag deployment based on position restricted
  • Safety note: airbag system; disconnect sensor and seat plugs only de-energised (ignition off, battery off, wait time); calibrate position sensors after replacement, specialist workshop only

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–800
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver occupant position sensor dsrs wiringsrs control module

Related codes

B00B9B00BBB00B8B00B7B00A1

References: patents.google.com, law.cornell.edu.