What should I do when my 2006 MDX will not start, and I hear a rapid clicking sound?

SOURCE: 1998 tl 3.2 won't start. only a 'tak' sound can be heard

I ave the same problem, but it only seems to happen when it is hot and humid out.

SOURCE: I have a 2004 Acura MDX. When I try to start it I

Is it the original battery? Time for a new one. Pull it out and take it to Napa/Autozone/Checker...... and have them check it - you will probably come home with a new battery.
Or it could be the starter. On some cars the starter is very easy to change - unplug it and remove two bolts. Other cars you may need to remove something like the air cleaner - so a few more bolts. Search the internet for details on your car. Checker/Autone stores can also check your starter for free.

SOURCE: 2008 acura mdx won't start. battery is fine.

First check ground wire from motor to body also from battery to motor and body. Also solonoid or starter could be b/o

SOURCE: 2003 MDX makes clicking sound but will not start

Sounds like you got a poor connection or your battery is not fully charged up,Did you replace cylinoid as well as starter.?