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What is a non-SRS wiring repair? It is the repairing of an electrical component that is not part of the supplemental restraints system circuit (usually identified by yellow wire looms). As technology increases on vehicles, so does the number of components that utilize electricity. Many of the sensors and modules are becoming smarter and more sensitive. If the wire is too long, the wrong gauge, or spliced in the wrong location it can cause malfunctions in the components that it’s powering. Many OEMs have different restrictions and guidelines for repairing wiring that does not control SRS components. On the other hand, there are OEMs that don’t allow wiring repairs at all, so full harness replacement is the only option.
Per the Mercedes-Benz document - Advantages of Repairing Wiring Harnesses: "If repairs are carried out properly, there is no difference in function or quality between the repaired wiring harness and a brand new one."
Per the Mercedes-Benz document - Repair Methods for Wiring Harnesses: "Individual cases must be analyzed in detail to decide which repair methods can or should be used for wiring harnesses (lines, contacts and connector couplings)."
More information on approved wiring repair methods can be found on the Mercedes-Benz service site under document number AH00. 19-P-1000-04A. You can find this document number by searching the table of contents on the service site.
It is important to read the service and repair manuals to make sure what repairs can be carried out and where, to achieve a complete, safe, and quality repair.
For additional Mercedes-Benz information, check out the Mercedes-Benz OEM Information page.
Additional I-CAR Collision Repair News you may find helpful:
- Collision Information Website Access: Mercedes-Benz
- Non-SRS Wiring Repairs
- Step-By-Step: Accessing Mercedes-Benz Repair Information