Aervice 4wd light keeps coming on. abs light comes on. today the service 4wd, abs an parking brake light came on at the same time. the screen said service brake system. what should i check for.

Anti-Lock Warning Light (ABS) - If Equipped This light monitors the Anti-Lock Brake System (ABS) described elsewhere in this manual. This light will come on when the ignition key is turned to the ON position and may stay on for as long as four seconds. If the ABS light remains on or comes on during driving, it indicates that the Anti-Lock portion of the brake system is not functioning and that service is required, however, the conventional brake system will continue to operate normally provided that the BRAKE warning light is not on. If the ABS light is on, the brake system should be serviced as soon as possible to restore the benefit of Anti-Lock Brakes. 24 7 Locksmith Orchard Park NY 716 710 7400 Locksmith Orchard Park NY

Is your parking brake stuck on?

try bringing it to your local auto parts store and have them scan it, most auto parts stores offer this as a free service.
Jay.. the pool pump repair guy longwood florida

ABS and Brake warning lights intermittent may be caused by a failing wheel speed sensor(ABS Sensor) and /or its connector. You may have one on each wheel hub(4WD) or if 2WD, a sensor may be on the rear axle differential center.

Could be either system since they are connected. The regular brake light will come on if the hydraulic fluid level drops, or if the parking brake is on.
The ABS light comes on if there is a problem in that system and it should set a trouble code like the engine computer does.

They are connected thru the body computer. IE, if you are in 4wd and a problem develops with the ABS the system will go into limp mode.
You will need to get the codes scanned to find out where to start.

The lights come on when the 4wd is deactivated by pcm. check the speed sensors for debris built up on it.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

yeah my abs has flashed for years now= bad sensor wont affect your driving

There is an ABS sensor on each wheel. Check each one and make sure they are plugged in first. If they all are plugged in, then you may need to replace one or more of them. You can usually see if they are bad. Hope this helps.

check your fuses. check your fuses. check under the hood on the top row there will be a 60amp fuse i beleive its the second one from the right it controls the abs system its blown. your probably gonna need a new altenator.