Bleed the brakes. It sounds like you have air in the system.
On a vehicle with anti lock brakes
That all depends on what's most important to you; good braking or low weight. Disc brakes offers better braking but are heavier. Rim brakes are lighter, but braking will suffer in wet conditions.
There is no 'set' answer for this question. Be aware that there are built-in warning devices on the brakes. When the pads are low you will begin hear a screeching sound whenever you apply the brakes. When you start hearing that sound consistently - it is time.
No, it locks up on the brakes
common sense Listen for squeaking and feel for pulsating when braking. Too much of either and you should have them looked at.
If the brakes on a 2003 Toyota 4Runner are locking up there is a problem with the calipers. The units should be inspected for wear, to avoid any serious injury.
Brakes wear and require maintenance. They should always "work as well as they used to". When you detect a change in the braking have a trusted mechanic inspect them asap.
Anti-lock? As in "Anti-Lock Brakes"? Many cars don't come equipped with Anti-Lock Braking Systems. If you car is supposed to have anti-lock brakes and they are not working properly, you should have them fixed. You should never drive around with faulty brakes.
It would probably cost at least $200. You should ask your local repair shop to specifically find out how much it would be to replace the brakes in your Toyota.
ABS = Anti-Lock Brake SystemIf you have this light come on while not braking, it most likely means there is a problem with the electronic controls in your brakes. If it comes on while you are braking, it means the Anti-Lock has kicked in. It should only do that however, if you are braking really hard.
If you hear any kind of noise upon braking, you should get your brakes checked. Sometimes it's just a matter of needing an adjustment. Brakes that do not work properly can be very dangerous to ignore.
No, if your car has ABS (Anti-lock Braking System) do not pump your brakes. The anti lock system does this for you.