Body, generic

B0013 Passenger Knee Bolster Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0013 belongs to the knee airbag on the passenger side, which deploys from the lower glovebox area and keeps the passenger's knees and thighs from sliding under the dash. Mercedes-Benz logs B001313 for an open squib of the front passenger kneebag. Ford pairs B0013:1A with the driver knee code B0004 on the 2024 Ranger; the TSB has all four airbag connectors checked, the passenger knee airbag being C2433, and swaps those with the wrong moulding number. GM uses the same number differently: in its later modules B0013 is stage 2 of the driver steering wheel airbag, with the same fault bytes as B0012 (Saab 9-4X 2011, GM 2009 Cobalt coil coverage). So a GM vehicle needs a check at the steering wheel, other makers at the passenger knee airbag. The airbag lamp is on.

Likely causes

Faulty connector at the passenger knee airbag (Ford TSB 24-2444)
On GM vehicles fault in the driver airbag stage 2 loop or clock spring
Internal fault in the passenger knee airbag

Symptoms

  • Airbag warning lamp on
  • Passenger knee airbag (or on GM driver airbag stage 2) may not deploy
  • Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–900
Time1–3 h

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

Parts involved

knee airbag passengersquib circuitsrs control module

Related codes

B0004B0010B0015

References: static.nhtsa.gov, static.nhtsa.gov, saabwisonline.com.