|
Well it has happened to me in a few drives and it happened for many times during my drive home today. The weather was nice, temperature about 70F. The SOC wasn't low. The engine was warmed up. The car had gone through the S4 "dance". It would drop out of S4 (engine not shut down during glide or regen). Then it came back to S4. Then later it would drop out again, and then came back to S4 again. This happened well into the drive when everything should have all warmed up. In the past I had assumed the cat temps may not be high enough. But today I watched them and noticed that there were occasions when the car dropped out of S4 at cat temps higher than those at which the car came back to S4 later. Any idea why the car would drop out of S4 well into a long drive?
|