UPDATE: ICCU Replacement
Just got my 5N back from a ICCU and ICCU fuse replacement. The failure happened Tuesday morning. The car was towed to the Santa Monica service center that morning and issue was confirmed later in the day. Service advisor ordered replacement parts, 36400-1XLA1. Parts arrive Friday and repair was completed mid day Saturday. Total turn time was 4.5 days, pretty impressed. Unsure if this part number was an update or the same as original. Google shows an earlier version number for original part. Hope this info is helpful.