New batteries but wont turn on - Canon Speedlite 550EX TTL Flash

Check the battery ground and the bonding strap from the body to the engine block.

Sounds like you may have a bad battery. How old is the battery?

No one can help you much if they do not know what year etc. your bike is. WHAT DTCs are set??

check battery contacts and make sure that batteries are in correct position - other than that you will have to return unit for service

dealer only factory immobilisor has cut in

1. Make sure you will install a new or fully charged battery/batteries into your camera. Please use lithium batteries Ni-Mh or rechargeable Batteries (2000 M.Amp or higher).

2. Clean the battery contacts.
a. Remove the battery/batteries and the memory card from your camera, then wipe the battery contacts with a soft, clean cloth.
b. Reinstall the battery/batteries into your camera

3. Turn on your camera without the memory card.

your psp is frying your battery. well the eeprom on the battery.

check your charger.

you need batteries with a high voltage...combined over 3.3

WELL I DID NOT FIX THE PROBLEM YOUR MP3 JUST WONT TURN ON AS SOON AS I PUT ANOTHER BATTERY IN IT WOULDN'T PLAY I ONLY GOT IT ON CHRISTMAS AND NOW IT WONT TURN ON