Chelly

About two or three days now ive noticed my Lexus is slightly weaker sounding upon cranking. Once it is cranked everything seems strong. Well yesterday and today I noticed while at a red light the green clock seemed to get dimmer while sitting...then when I accelerated it gets back to full brightness. I sat in park for about 5 mins and the car is staying cranked but the clock gets dim. Idling like normal..Never noticed this before...the battery is brand new only a few months old...the expensive battery too not a cheaper one. Also, the alternator went out about a year or two ago and that was changed as Well. I havent looked yet but sometimes my battery moves around a bit and the connections aren't so good could it be that the battery connections need to be tightened? What else might need to be checked? Like I said the car is strong when accelerating and idling.

BDSL

Check the connection at the battery terminals.