Assist problems of the 2020 Honda Ridgeline

My Honda 2020 Ridgeline has intermittent faults on the dash monitor, it displays acc, lkas, collision mitigation, high beam, lane departure warnings, and sometimes transmission problem. I am told it is the muti cable assembly sensor on the front window not communicating with the other sensors. I took my car to auto zone and they stated no communication, due to a bad battery. I replaced the battery, and it still has the multiple errors/ fault codes. During research several people have had this problem with Honda vehicles. At times it goes away for a day or two and then comes back with the same faults. It seems like a faulty part. The dealer wants 1800 for repair and calibration of sensors, this was after they ran a diagnostic test and found no engine faults/codes.

Problem started without warning. A couple of days ago all of these are disabled, warning lights scroll through on dash: acc problem, collision mitigation problem, lake keep assist problem, auto high beam problem. It cleared once after restarting and once after service mechanic cleared codes. Issue returned the next day and continues. Built in safety features are not working. Deciding on having Honda dealer check it out.

Beginning about 3 months ago the automatic idle stop (ais) would randomly not function at start-up during the length of a drive though there was no indication of any issue on the dash. Shutting off and restarting would allow usually allow it to function normally. About 6 weeks ago the ais stopped the engine at a red light, and when I removed my foot to accelerate the engine did not start, the car shut off. It took a couple of seconds to realize the vehicle was down, I had to shut the car completely off and restart to get moving almost getting rear-ended since I did not move when the light changed even though my brake lights went off, confusing the driver behind me. Ais failing to start has become more frequent and now happens at least every other day. In traffic this is a safety issue for sure. Additionally, the lkas system randomly displays a new message on the dash that it is disabled for a few seconds while driving on the freeway and then clears itself. Other seemingly related electrical issues started at the same time. On several of the occasions that the ais failed to restart, all dash lights flickered rapidly, and the speedometer needle bounced wildly. After shutting down and restarting the a and b trim computers had been zeroed as well as the mpg average being zeroed, and the economy mode had been switched of. These nuisance electrical issues are not a safety concern themselves but may help point to a common failure which does cause the safety issues of the ais and the lkas systems. I believe you are investigating similar ais issues on the Honda pilot which shares many of the electrical and drive train components with the Ridgeline.