Help my friends handbrake on her automatic vauxhall Mokka is stuck on how can it be released?

If you are referencing the botton in the end of the handel, then I would start with a dealer. However they may only have it available as part of an entire handel assembly. Then there is the option of salvage yards and lastly Ebay.

34psi

some times the release button gets stuck in the handle, you may need to pull it apart or lube it. Does the spring feel broken? "I had a problem with the button sticking in a VR. I sprayed some silicon lube in the gap around the button, levered it back out with a screw driver and it never stuck again." last comment > http://forums.mightycarmods.com/showthread.php?3116-handbrake-wont-engage

Probably the hand brake cable has become jammed, and need to be replaced.

How do i adjust my hand brake on a vauxhall insignia year 2010?

You may have to pull up really hard to be able to release it, if it was applied really hard, if not and it's an automatic transmission you may have to get someone to cut the cable going to the rear brakes to release them. NOT THE METAL LINES

Does the car have drums or disc brakes on the rear? If it has drums then the handbrake lever may not be releasing on the rear shoe itself or a spring or brake lining could have let go and got jammed. If the handbrake lever is the problem then removing the wheel and striking the drum with a large ball peen hammer should release it (may be barbaric but it works), this will not solve the problem the brakes would have to be removed and serviced or replaced depending on the problem. If the vehicle however has disc brakes on the rear then the caliper on that wheel may have become stuck or seized, normally they are replaced nowadays if this occurs since rebuild kits are not readily available. Still with disc brakes could also have stuck pad in its guide on the bracket, although much less likely, also tends to be less costly since you only have to remove and clean it up (rust, etc). If the handbrake is inside the rotor (internal drum), then you could have a problem with the shoes or lever releasing inside the rotor (depending on the setup on the rear). As well if it were not brakes in very, very rare occasions a wheel bearing could lock up, not very likely though. hope this will help you good luck

if you look in the boot where there may be a spare wheel there can sometimes be a leaver thich will overide the automatic system

i have vauxhall vivaro van got starting problems could be glow plugs but now i have a flashing stop light on what looks like a picture of a engine

This is normal operation. The XL-7 has daytime running lights and automatic headlight controls. You can keep headlights off when starting by applying the handbrake. If / when the daylight sensor on the dash determines it is evening and turns on the headlights, they will come on regardless of the handbrake position; and obviously, if you want to move the car, you have to release the handbrake (and headlights come one).