B0076Third Row Left Seat Belt Pretensioner Deployment Control
- Generic OBD-II code · Body
- How the car detects it
- B0076 belongs to the pretensioner at the left seat of the third row, a position found only in vehicles with a third seat row. No carmaker publishes B0076 with this meaning. Mercedes shows how third-row units are logged in practice: its LI54.21-P-070658 names open-circuit faults of the emergency tensioning retractors at the left and right of the third seat row as B00E7 and B00E6, the C-stage slots, so a B0076 is not to be expected on those models. The circuit itself is a pyrotechnic squib that the airbag module checks for opens, shorts and resistance drift, as with the front retractor and buckle units GM and NHTSA describe. If B0076 is stored, the airbag lamp is on and the third-row left occupant may not get any pretensioning.
- What you may notice
- Airbag warning lamp on
- Third-row left occupant without pretensioning in a crash
- Safety note: pyrotechnic belt component; disconnect the battery and wait before touching it, repair at a specialist workshop
- Likely causes
- LikelyPlug at the third-row left belt disturbed by folding or removing the seat
- PossibleHarness damaged by luggage or trim work in the cargo area
- RareAirbag module coded for a third-row pretensioner that is not fitted
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.