Hi Folks,
Just wanted to run something by you guys before going to the stealership. I have a 07 TL-S with 23k on it. Today I was out on a 100+mile trip. While stopped at a red light( after 50 mile highway cruise) I noticed that when I hit the rear defogger switch the engine tone changed just a bit. It was very very subtle but noticeable. It was about 20% of what you would feel when you switch on the A/C. I could repeat it by locking/unlocking the doors. I also realized with the change in engine tone there was a subtle change in feeling in the gas pedal too when I hit the lock or switched on/off any accessory. Does anyone have a clue as to what is going on? Is the battery on its way out or is it a weak alternator putting load on the engine even with just switching on the accessories?? Lastly, I was considering the ground connections as well. Does this warrant a stealership visit?
Thanx
Rick

 

I vote yes for dealer. Stuff usually does not fix itself. Battery is known to not be very good. Nice warranty though.

 

could be any number of things

1. Electrical Load Detector
2. Battery
3. Alternator
4. Loose ground somewhere