2019 Highlander. I changed the oil today, cleaned engine and cabin air filters (both washable), cleaned mass airflow sensor and throttle body.
Now I get both check engine light and service AWD message. I think the AWD message first appeared when driving up on the ramps and they slid, but not 100% this is when. I don't think the check engine light was until I put the car "on" (engine not started) while oil was draining. At this point the MAF was not connected since I disconnected it to clean it. The air filters were removed later.
It drives fine but the messages still appear after several times stopping and starting the engine. I have the negative battery terminal disconnected right now hoping it clears things.
Other thoughts?
Now I get both check engine light and service AWD message. I think the AWD message first appeared when driving up on the ramps and they slid, but not 100% this is when. I don't think the check engine light was until I put the car "on" (engine not started) while oil was draining. At this point the MAF was not connected since I disconnected it to clean it. The air filters were removed later.
It drives fine but the messages still appear after several times stopping and starting the engine. I have the negative battery terminal disconnected right now hoping it clears things.
Other thoughts?