Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
The following additionally applies
Shielded lines (coaxial lines):
- This may lead to indifferences in noise radiation and interference immunity at contact points in the shield
- To satisfy the requirements of the type approval, it is essential to replace shielded cables completely
Fibre-optic cable:
- Green = MOST (M edia O riented S ystems T ransport) optical fibre
- Yellow = ISIS (I ntelligent S afety I ntegration S ystem) optical fibre
- Orange=repair fibre-optic cables
- Optical fibres may only reveal one separation point (bridge); renew optical fibre if necessary
- Smallest permissible bending radius is 25 mm
- Avoid effects of heat ≥ 85 °
Treating cables and fibre-optic cables: see TREATING CABLES AND FIBRE-OPTIC CABLES .
FlexRay:
It is possible to repair the FlexRay. In the event of damage, the cables can be joined with conventional BUTT CONNECTORS AND HEAT-SHRINK HOSES .
- FlexRay lines may only reveal one separation point (bride); renew complete line if necessary
- The cable is a twisted cable. If possible, maintain twisted cable after repair
Airbag lines:
Shielded lines
Contact points in the shield can cause problems with regard to noise radiation and interference immunity. Consequently, distinctions have to be drawn between the following types:
Coaxial line
- Shielded RTK031 coaxial lines may only be repaired with special crimping tool for repairing the coaxial line RTK031.
CVBS lines
- CVBS lines may not be repaired.
- CVBS lines must be replaced in their entirety.
HSD lines
- HSD lines may not be repaired.
- HSD lines must be replaced in their entirety.
Optical fibre cable:
- Green = MOST (M edia O riented S ystems T ransport) optical fibre
- Yellow = ISIS (I ntelligent S afety I ntegration S ystem) optical fibre
- Orange = repair optical fibre cables
- Optical fibre cables are permitted to show only one separation point (bridge), replace optical fibre cables if necessary
- Smallest permissible bending radius is 25 mm
- Avoid influence of heat ≥ 85 °
Treating cables and optical fibre cables
FlexRay:
It is possible to repair the FlexRay. In the event of damage, the cables can be joined with conventional butt connectors.
- The line is a twisted cable. If possible, maintain twist in line after repair.
Airbag lines:
Repairing airbag cables
Ribbon cables:
Repairing ribbon cables Z
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.