This DEF tank fluid level sensor accurately monitors the level of Diesel Exhaust Fluid (DEF) in the tank, which is essential for the selective catalytic reduction (SCR) system to reduce NOx emissions. Engineered for precise measurement and durability, it provides reliable readings unlike a worn sensor that may give false indications or fail completely. Operators might observe incorrect DEF level warnings on the dashboard, or the SCR system may deactivate if the sensor fails to report accurately.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A failing DEF level sensor may initially cause intermittent or inaccurate DEF level readings on the dashboard display. If left unaddressed, the system may trigger a check engine light or a 'DEF level critically low' warning, potentially leading to reduced engine power or shutdown. The primary risk is the inability to operate the vehicle legally due to SCR system malfunction.
Before removing the old sensor, ensure the DEF tank is nearly empty to minimize spillage and contamination. Avoid forcing the new sensor into place; it should seat smoothly if aligned correctly, preventing damage to the tank or sensor threads.
After replacing the DEF level sensor, it is crucial to refill the DEF tank and then cycle the ignition several times to allow the system to recalibrate and recognize the new sensor.