I'm pulling my hair out over this one. I haven't found a single person on the World Wide Web that shows to have had this problem. Hopefully, someone here on the forum knows what I need to do.
Several weeks ago the "Check Charging System" message popped up on the information display, along with a glowing "battery" light.
The van always starts, the battery has never gone dead and all other electrical systems work as they should.
What I've tried so far:
Had battery Load Tested several times, by different places. Even though it's 4 years old, it checks "Good".
Had the alternator checked several times, by different places. Checked it myself with a DMM. It shows to be working fine.
Replaced the ELD (electrical load detector). No change.
Took van to Honda dealer. They do an ECU update and check for codes. No codes found. They say I "might" need a new alternator.
Dealer wanted $1,100.00 to replace the alternator and no guarantee that it would solve the problem.
Load tested both battery cables. They were fine.
Removed alternator and had it bench tested, which showed it was good. Technician took it apart and replaced the voltage regulator and diodes for the rectifier.
Still have the message and light.
Had the battery tested by Interstate Battery today and after (3) simulated starts at the maximum Cold Cranking Amps, it was on the border-line of marginal & good.
Went ahead and replaced the battery. No change.
Did a Battery Cable Reset without any luck.
This is our 14th Honda and 5th Odyssey and unfortunately, this is first one to ever have a problem and it's a doozy.
Any ideas on what to do next, other than trade for a Sienna?