B00E5 code meaning
Second Row Center Seat Belt Pretensioner C Deployment Control
What B00E5 means
B00E5 covers a C-stage tensioner at the middle seat of row two. No manufacturer publishes it. Rear centre tensioners are scarce: Mercedes' 2017 GLS manual names tensioners only for the outer second-row belts, and the Mercedes bulletin that assigns B00E3 and B00E4 to the outer rear retractors has no centre entry. IIHS research on rear occupants (2020) states that belt countermeasures for the rear are available yet rarely fitted, so such slots often stay empty. If a vehicle does carry a centre retractor or buckle tensioner, the airbag module watches its squib like any other and sets B00E5 for an open, a short or a resistance drift; the warning lamp then comes on and that seat loses its tensioning.
B00E5 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.3 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B00E5
- Airbag lamp on
- Rear centre passenger may not be held back early in a frontal crash
- Safety note: the tensioner holds a pyrotechnic charge – battery off, wait time observed, repair at a specialist workshop
Common causes of B00E5
- Most likelyCentre-seat tensioner plug under the rear bench not engaged
- PossibleModule coded for a centre tensioner that the vehicle lacks
- PossibleLead damaged where it passes the split or folding rear bench hinge
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Second row center pretensioner cSquib circuitSRS control module
What each part of B00E5 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| E5 | The exact fault in that area. |
What to do next
- Note B00E5 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B00E5
What does B00E5 mean?
B00E5 means "Second Row Center Seat Belt Pretensioner C Deployment Control". B00E5 covers a C-stage tensioner at the middle seat of row two. It is a generic code, so it means the same on every make.
Is it safe to drive with B00E5?
B00E5 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B00E5 fail an emissions test?
B00E5 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B00E5 to fix?
Difficulty: workshop only. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will B00E5 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.