B00E6 code meaning
Third Row Right Seat Belt Pretensioner C Deployment Control
What B00E6 means
Note the order in this block: B00E6 is the right seat of the third row, while B00E7 is the left. Mercedes-Benz fills B00E6 with the retractor tensioner on that seat: LI54.21-P-070658 (first issued December 2019 for A-Class and CLA, extended to GLB in version 4) reads B00E613 as an interrupted igniter in the tensioning retractor on the right of row three. The stated cause is again contact resistance at the airbag unit plug. Mercedes' GLS manual of 2017 confirms that the brand gives third-row belts their own tensioners and force limiters. No other maker publishes the code. With B00E6 stored, the airbag lamp is on and the right third-row belt will not be tightened.
B00E6 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 B00E6
- SRS message or airbag warning lamp
- Right third-row belt stays slack in a crash
- Safety note: work on this pyrotechnic retractor only de-energised (battery disconnected, wait time) and preferably by a specialist
Common causes of B00E6
- Most likelyContact resistance at the airbag unit connector (Mercedes LI54.21-P-070658)
- PossiblePlug of the right third-row retractor behind the cargo trim loose
- Less likelyWiring in the rear wheel arch area pinched by trim or cargo
- Less likelySquib of the right third-row retractor defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Third row right pretensioner cSquib circuitSRS control module
What each part of B00E6 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). |
| E6 | The exact fault in that area. |
What to do next
- Note B00E6 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 B00E6
What does B00E6 mean?
B00E6 means "Third Row Right Seat Belt Pretensioner C Deployment Control". Note the order in this block: B00E6 is the right seat of the third row, while B00E7 is the left. It is a generic code, so it means the same on every make.
Is it safe to drive with B00E6?
B00E6 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B00E6 fail an emissions test?
B00E6 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 B00E6 to fix?
Difficulty: workshop only. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will B00E6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.