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.
64 99... Fault 08 Burner insert
Instruction:
Check exhaust pipe and muffler for soot deposits and damage and replace if necessary, refer to 64 12 590 REMOVING AND INSTALLING OR REPLACING MUFFLER .
Check intake pipe for damage and replace if necessary.
Remove burner insert, refer to 64 12 535 REMOVING AND INSTALLING/REPLACING BURNER INSERT (THERMO TOP S) .
Clean or replace burner insert and then measure CO2 content.
Specified value:
11.0 to 11.5 % CO2
NO RELATED
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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.