Avalon Hybrid Oil Pressure Warning

I have an Avalon Hybrid as well, and what you're describing sounds eerily familiar to an issue I encountered not too long ago. The oil pressure warning lamp, combined with the unusual engine noises, definitely points toward a lubrication problem. I would not ignore this. Have you checked the condition of your oil filter? Is there any oil leakage underneath the car? Have you tried connecting a manual oil pressure gauge to check the value?

I haven't checked the oil filter yet, to be honest, but it's probably due for a change anyway. Could a clogged oil filter really cause such a drastic drop in oil pressure? I haven't noticed any oil leakage on the ground, but I'll take a closer look tomorrow. I don't have an oil pressure gauge, unfortunately.

A clogged oil filter COULD contribute, but with those engine noises, I suspect something more significant is at play. It sounds to me like your oil pump might be defective. The low pressure can lead to bearing damage very quickly. I would strongly advise against driving it any further and get it to a workshop as soon as possible. In my case, it was a faulty oil pump, and the repair cost me around 755€. It is worth taking it seriously because ignoring the problem can lead to complete engine failure.

Thank you so much for the advice! I'll get it towed to a trusted workshop first thing tomorrow. Your experience has been invaluable. I am so glad I posted here. I just got the car back from the shop. You were right - the oil pump was defective and needed replacement. The bill came to exactly 755€. Thanks again!