By Ben W
I purchased a 2017 RX450h and am absolutely impressed by the quality of the vehicle and love the driving experience. However, only three weeks after purchase with around 375 miles on the odometer, I parked it in my garage for five days and when I tried to start it up it was 100% dead. Needless to say, the doors automatically unlocked, and the gas door flipped open sometime during the five days the vehicle sat in the garage so there seems to be a fail over built-in when the battery is ready die.
So I have two questions that I'm hoping the community might be able to answer. First, has anyone experienced battery drain with a brand new Lexus RX; secondly, is there any way to diagnose *why* the battery drained from information stored in the on board computer?
Thanks for taking the time to read my post, glad to be part of the owner's club.
After months of parasitic battery drain, I was told by my mechanic, a former Lexus mechanic, that the multiplex body control module is what's causing the drain. The car has 157K miles and I hadn't planned on doing another repair before selling it. Where is this part located, what labor has to be done to replace it, and is it possible to get a refurbished one that will work with my existing key? My mechanic says it's possible this is related to an accident in which the headlight was replaced, so the case is being reopened with the insurance company. Since the servo motor is also going bad, should I just trade in the car?
I have a 1999 RX300. About 4 months ago the battery started going dead after 48 hours on non-use. The battery was 3 years old and tested fine. I had it recharged and again...the car went dead. I had it replaced. Same thing.
Since then I have had three different mechanics test every electrical system. All fuses were fine and nothing showed up on the diagnostic meter. I changed the Body Control Module. Still no luck.
Some issues that occured around the same time the battery started dying were: My key fob would not work on the door lock system. My 6-disk CD player would not load one disk properly. My right-front ABS brake sensor went bad after the transmission was replaced last year. I have since had the ABS sensor replaced.
Please give me suggestions or insight. I am willing to try anything at this point.