Body, generic

B00E6 Third Row Right Seat Belt Pretensioner C Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Contact resistance at the airbag unit connector (Mercedes LI54.21-P-070658)
Plug of the right third-row retractor behind the cargo trim loose
Wiring in the rear wheel arch area pinched by trim or cargo
Squib of the right third-row retractor defective

Symptoms

  • 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

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€50–900
Time0.3–3 h

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

Parts involved

third row right pretensioner csquib circuitsrs control module

Related codes

B00E7B00E8B00E1B0078B0058

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