parking brake adjustment

[SiLeach]

Hi,
I have a 2002 C200K Coupe and the parking brake needs adjusting

When I pull the lever to release the brake, the pedal doesn't rise all the way up, this in turn leaves the light on the dash lit, which in turn start a very loud alarm as I drive off.

As I pull the release lever , I have to place my left foot under the pedal and help it up.

Is this easily adjusted and sorted, or is it a trip to the garage ?

Advice would be appreciated, thanks

 

[whitenemesis]

Could be the pedal return spring is broken / weak

Cable adjustment is at the rear, access via a panel underneath the rear seats. parking brake shoes are adjusted via a small access hole in the rear drums