Instruction. A used Airbag can be used with 3 deployments of the side/top Airbag and/or seat belt pretensioner. After the third actuation, an error message appears "Control unit malfunction".
A used Airbag must be replaced: when the driver's/front passenger's Airbag is deployed, if the casing is damaged, if it is deformed in a tunnel within a radius of 200 mm around the control unit, after three Airbag deployments. Always replace: All deployed airbag modules.
Additionally, if the front passenger's airbag is deployed, replace the front panel. If the front passenger module supports are deformed (self-correcting is prohibited) the central tube of the front instrument panel should be replaced. Transverse acceleration sensor for deformation of the trough-shaped chamber under the floor / rack -B- in the sensor area.
In addition, when the driver's Airbag is triggered, replace the return ring with a slip ring, the lateral acceleration sensor in case of deformation of the trough-shaped chamber under the floor / pillar -B- in the sensor area, the steering column in case of damage to the steering column.
In addition, when the side airbag is triggered, replace: the lateral acceleration sensor on the triggered side, the lateral acceleration sensor that did not work when the trough-shaped chamber under the floor / post -B- is deformed in the sensor area, the lower column trim B on the side of the triggered sensor.
Additionally, when the head airbags are deployed to protect the head, replace: the transverse acceleration sensor on the deployment side, the lining of the pillars A, B, C, D, the ceiling of the body and the support plate of the C-pillar, the transverse acceleration sensor that did not work when the trough-shaped chamber under the floor / pillars is deformed - B - in the area of the sensor.
Additionally, all automatic seat belts with deployed pretensioners are replaced. If there is reason to believe that the seat belt tensioner has been activated, connect a suitable diagnostic tester, eg Diagnostic tester -VAS 5051B-.
IN "Guided troubleshooting year by address "15. Airbags Check whether it is entered in the control unit. airbag collision message. Check for a fault message in the seat belt pretensioner "The resistance is too high": If all conditions are met, the belt tensioner must be replaced. "Prerequisite: The airbag control unit has not been changed".
Instruction. Message "The resistance is too high" can also appear when the wires are broken. Then, if these parts are in good condition, there will be no collision message. Various additional items: check the seat belts.
When removing parts of the seat belt system in the event of an accident, replace the seat belt system mounting bolts. If necessary (visual inspection) optionally replace: all damaged components. After replacing the airbag modules or the control unit, affix labels (detachable parts only) on the registration card.
Crash without airbag deployment
If the airbag warning lamp -K75- does not indicate a fault, the airbag components do not need to be replaced. Carry out a separate check of the seat belts. Check steering column for damage. After replacing the airbag modules or the control unit, affix labels (detachable parts only) on the registration card.
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