[tia1106]

I have my LED set to flash red after receiving SMS, MMS, e-mail, or missed calls, and it stopped working suddenly.
I have pulled the battery several times.
There is no Bedside mode in my Clock options.
All profiles are set to flash the LED.
It will flash blue when connected to my Bluetooth, and green when the battery is low.
The ringer and message sound notifications still work normally.

Help??

[Motorcycle Mama]

Go to Options > Status and type test (note there won't be anywhere to type it, but type the letters anyway).

Then run the diagnostic test (the LED is under Misc) to see if the hardware is physically working.

[tia1106]

It correctly cycled through each color. So it's not a hardware issue I suppose. Anything else?

[ttfmaep]

Open Messages. Then click the menu key, then Options>General Options. Make sure "Display New Message Indicator" is set to Yes.