ABS issue on a 2002 Pontiac Bonneville SSEI

My friend's 2002 Pontiac Bonneville SSEI, has an ABS that activates on normal stops and the ABS stops working completely. Do you think it is the module?
Experienced mechanics share their insights in answering this question :
It often is on those. Those are very expensive computer-driven systems. I have a video "fixing ABS brakes on your car." Watch that. But, once you’ve watched that, you are going to realize that you are not going to try to figure out yourself, because the computer I use in that video is very expensive.

You don’t just want to guess with an expensive module. Those things are really expensive. I know there are remanufactured ones out there, but from my experience they are poor quality. You really need to buy a new one. Whenever I replace them, I always use new ones, because the rebuilt ones can often have problems. Have the brake system inspected by qualified mechanic. They will be able to assist you with diagnosis and a repair for this problem.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The four common reasons that typically cause this light to turn on include a malfunctioning ABS module, low levels in the fluid reservoir, broken wheel speed sensors, or the system is turned off. Your ABS actually shares some important components with another system in your vehicle: your traction control system.
What detects the fault in the anti-lock brake system? Explanation: The fault detection in an electronic brake system is possible by fault code diagnosis through Electronic control unit.
The ABS brake light doesn`t mean you have zero braking capability. Instead it means that your brakes are now on their own, and you are too. If conditions are bad, your brakes will perform like brakes did before ABS. Without regulation, your brakes may stick right when you need them the most.
Signs of a failed ABS system include ABS light always ON, on your dash, the car not braking correctly (brake pedal feels different to normal), or loss of control while braking. Reduced braking performance – A failing ABS relay can cause reduced braking performance, especially during hard braking.
The most common ABS problems occur when sensors become contaminated with debris or metal shavings. Malfunctions also occur when sensor wiring becomes damaged, resulting in intermittent or no continuity.
If the ABS system is not functioning properly, then your vehicle is likely to skid, hydroplane and lose traction under heavy braking conditions. The last time you want to find this out is when you need it most in tough conditions, which could lead to an accident on the road.
What is the anti-lock brake warning on my dashboard? An ABS light indicates a problem with your vehicle`s anti-lock braking system. Your anti-lock braking system is what keeps your wheels from locking up when you suddenly apply the brakes.
When the warning light is on, it could mean that a sensor has gone bad or needs cleaning. It could mean that the module has gone bad. A steady warning light indicates a problem that may affect your safety. A blinking light is a warning that your safety may be endangered if you drive.
If you are sure it is the ABS relay missing, then that will not prevent your car from starting. That circuit is unique only to the brake system. If the engine does not crank over fast when starting, you likely have a weak battery or another connection issue.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

ABS issue on a 2002 Pontiac Bonneville SSEI
ANSWER : It often is on those. Those are very expensive computer-driven systems. I have a video "fixing ABS brakes on your car." Watch that. But, once you’ve watched that, you are going to realize that you are not going to try to figure out yourself, because the computer I use in that video is very expensive.

You don’t just want to guess with an expensive module. Those things are really expensive. I know there are remanufactured ones out there, but from my experience they are poor quality. You really need to buy a new one. Whenever I replace them, I always use new ones, because the rebuilt ones can often have problems. Have the brake system inspected by qualified mechanic. They will be able to assist you with diagnosis and a repair for this problem.

Chrysler 300 2005 abs not working. Code c2116. Does this mean my abs pump is dead for sure? Or could it be abs sensors.
ANSWER : Hi there. Take a digital volt meter and check the voltage on the harness to the ABS control motor. There should be a battery voltage present. If the voltage is low, then there is a break in the wiring from the computer to the ABS control motor. If the voltage is normal, then the ABS control motor has a burned cell and the ABS controller assembly would need replaced. This will effect the ESP system as well and set off the lights. If you need further assistance with your ABS system not working, then seek out a professional, such as one from Your Mechanic, to help you.

ABS malfunctioning
ANSWER : Your ABS system is not required to maintain driving the car regularly. The ABS is primarily based upon wheel speed sensors that relay wheel speed to the ECU which then determines whether or not there is a correction needed and then engages the ABS system. When these sensors are bad this will cause the ABS system to engage incorrectly when it is not necessary. I would recommend having an expert from Your Mechanic come to your home to diagnose and repair your ABS system.

When stopping at slow speeds the abs feels like they are engaging.
ANSWER : Hello. If you’ve already cleaned the sensors with soap and water then you probably won’t need to clean them again with stronger chemicals. The ABS sensors function as magnetic type sensors, and only need to be clean and free of excessive debris or metal shavings to function properly. You can test the wheel speed sensor signals with a multi meter or scan tool to see if they are giving a proper signal. If it is not then then there may be a wiring issue, or more likely one or more of the ABS wheel speed sensors may need to be replaced. A few other things that can cause those symptoms are a faulty ABS module, or more commonly, a bad hub assembly. The ABS sensors read their signal off a reluctor wheel that is built into the hub, and can experience problems if the wheel or hub wear out, or have some sort of issues.

What should i check before replacing the ABS module
ANSWER : Hello There,
It sounds like you may have some faulty wheel speed sensors that may be causing the ABS light to come on. Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car’s ECU. When the ECU senses an abnormal speed given specific conditions, it engages the ABS or traction control as needed to control the vehicle properly and safely. Occasionally, these sensors can fail or become faulty working intermittently sending inaccurate signals to the ECU. The ABS or traction control system may be inadvertently activated by these false or inaccurate signals. I would suggest having a professional from Your Mechanic come to your home to diagnose your ABS and traction control system.

Car jerks when accelerating in reverse & makes grinding noise. Is this a transmission or computer issue?
ANSWER : Hi there. Typically when you hear a grinding noise when you move forward or in reverse it’s usually an indication of a gear fault either in the transmission or another driveline component. If this occurs only when in reverse, it’s likely a damaged reverse gear. It is also possible that it’s a hydraulic fluid issue not supplying enough lubrication or pressure inside the lines to fully open the gear. I would recommend having a professional mechanic come to your location and complete a car is hard to shift inspection, so they can diagnose the source of your issue and recommend repairs that should resolve this problem.

Not sure my car have ABS or not 2011 Nissan Sunny
ANSWER : Hello – yes, your Nissan Sunny has Anti-lock Brakes System. It would appear that yours is inoperative, and the ABS light in the dash cluster has burned out, or one or more fuses have blown. Check for blown fuses first. Next, I recommend a brake inspection ASAP performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

Abs problem 2002 BMW 320i
ANSWER : Hello – I think you may have a problem with one of the high-pressure valves or the control circuit for the left, rear wheel. Your symptoms suggest that the ABS pump works fine, but is unable to pressurize and pressure-modulate that brake on the vehicle. You will need to test the ABS controller and pump assembly with a diagnostic tool capable of doing this. I recommend an ABS system inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.