Diagnosis needed for 1999 LHS 88K mi, not starting reliably
Nov 2014, car wouldn't start. AAA put in new battery. May 2015, Drove car 40 mile
round trip no problems. An hour after I got home, the car wouldn't start. Before AAA
arrived I tried again and it started. Next time I drove car, it had to be jumped.
Mechanic said battery failed test. Picked up from mechanic and it started right up.
Made a stop on way home and it wouldn't start. 2.5 hours later, AAA came and it
started right up. AAA said battery fine. Can anyone help me figure out what's wrong