05 toyta tocma with SRS warning light what is the

The owners handbook states that it indicates a malfunction of the air bags and advises to take the car to a dealer.
But.. sometimes a dodgy connection can cause this on a lot of cars. Sometimes the connectors located under the seat cause trouble on many. Also, the connection to the steering wheel air bag.

To make sure this isn't a one off, you can disconnect your battery for 15 minutes then reconnect. See if the fault clears.

If it doesn't then there's a fault most likely. Whilst the battery is disconnected, have a check of the seat connections if you can.

If there is an SRS fuse, you can just remove that to disable the airbag system, rather than disconnecting the battery itself. This way you don't loose your radio settings etc.