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peter_berger7

Lexus RX VANOS Issue

My 2016 Lexus RX gasoline engine has a check engine light at 63907 km, and fuel consumption increased. My mechanic says it's the inlet VANOS. He suspects a camshaft solenoid valve or its power supply. Has anyone else had this?

Summary of the thread

A 2016 Lexus RX experienced a check engine light and increased fuel consumption at 63,907 km, suspected to be due to a VANOS issue. The mechanic identified potential causes as a faulty camshaft solenoid valve or its power supply, supported by error codes P0011 and P0012. Suggestions included checking oil condition and considering solenoid cleaning, though replacement might be necessary. Ultimately, the faulty inlet camshaft solenoid valve was replaced, resolving the issue.

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4 comment(s)

gabrielstorm15

Sounds familiar. I drive an RX too. I had a similar problem a while back with the check engine light and mileage tanking. VANOS... yeah, variable valve timing. It's all about optimizing engine performance. If those solenoids get gunked up with oil sludge, they can cause all sorts of problems. Before you go tearing everything apart, have you checked the oil level and condition? Low or dirty oil can definitely mess with the VANOS system. Also, did the mechanic mention any specific error codes?

peter_berger7 (community.author)

The mechanic mentioned error codes P0011 and P0012, indicating an issue with the 'A' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1). The oil was changed approximately 5000 km ago, though I haven't personally inspected it since. Could oil sludge accumulate so rapidly even after a recent change? Is it possible to clean the VANOS solenoid without complete replacement?

gabrielstorm15

Those error codes confirm it, sounds like a VANOS issue alright. 5000 km is usually not enough to cause major sludge, but it depends on the type of oil used and your driving conditions. As for cleaning, some people have had luck removing and cleaning the solenoids, but it’s a gamble. Sometimes the damage is already done, and they need replacing anyway. Honestly, at this point, I'd advise letting a professional take a look. They can properly diagnose the problem and tell you if cleaning is a viable option or if replacement is necessary.

peter_berger7 (community.author)

Following your advice, I entrusted my Lexus to a reputable workshop. As suspected, the inlet camshaft solenoid valve was indeed faulty and required replacement. The final repair cost amounted to 250€, and the issue has been resolved. Your shared experience proved instrumental in navigating this predicament.

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LEXUS

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RX