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.
Additional exhaust-gas recirculation cooler: Components
The additional exhaust-gas recirculation cooler is fitted with a bypass flap so that it can also be used to control whether the exhaust gas is cooled or forwarded through the bypass. The bypass valve is vacuum-operated.
An exhaust-gas temperature sensor is placed at the output of the additional exhaust-gas recirculation cooler so that the exhaust-gas temperature can be measured.
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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.