History of ABS technology
ABS technology was first developed in the 1920s when the concept of
It helped aircraft wheels from locking during rapid deceleration.
ABS technology was applied to the motorcycles in the year 1950 and it reduced the greatest safety concern for drivers such as skidding and loss of traction to a large extent.
ABS technology has now become one of the standard safety features in almost all the vehicles in our daily life.
What is ABS?
ABS is a short form for Anti-lock Braking System.
ABS system is an automated system that helps to prevent the locking of wheels during braking. ABS system maintains the wheel`s tractive contact with the road surface.
ABS offers improved steering control and vehicle stability while braking and also reduces the stopping distance to a great extent.
ABS system is one of the safety features in our vehicles.
ABS system is made up of the following four main components:
- Speed sensors – they help us to determine the speed of the wheel during deceleration or acceleration. They are mostly fixated on the wheels.
- Valves – they are present along the brake lines of each brake. They are controlled by the ABS control module. Each wheel has a separate valve in its brake line.
- Pump – It is used to restore the pressure in the hydraulic brakes after the valves are released. The control module will modulate the pump to provide the desired level of pressure to avoid slipping.
- Control Module – It is an Electronic Control Unit that is used to control the braking system. It receives the signal from wheel sensors and operates the valves to regulate the brake pressure to avoid slipping
Toyota ABS Module
We have understood the concepts of the ABS system, its working and its importance in our vehicle systems.
Let us now go in depth to understand more about the Toyota ABS Module, and its circuit operation, symptoms to find the failing ABS module.
Let us first look at the photographic image of the Toyota ABS control Unit to visualize it.
The ABS Modulator unit consists of the following:
- an inlet solenoid valve
- reservoir
- pump
- pump motor
- damping chamber.
The modulator is used to control the pressure condition across each wheel by pressure reduction, intensifying and retaining. The ABS Modulator contains a separate solenoid valve for each wheel. These valves are independent of each other and operate individually. They are mounted vertically to improve the maintainability.
The modulators connected to the rear wheels act as the proportioning valves. They avoid the rear wheels for locking up during braking in case of the ABS failure or disconnection.
The modulator Unit consists of a separate mounting bracket kit that is used to connect it to the vehicle.
Symptoms to a bad or a failing ABS control module
Let us look into the symptoms that might indicate us to take a look at our ABS system. These symptoms indicate either the failure or malfunctioning of the ABS system. A malfunctioning ABS system may cause skidding, slipping and hydro-planning under heavy braking conditions. We need to either replace or repair the ABS system if any the following symptoms are found in our vehicle.
- Unresponsive Brake pedal – In some cases when ABS system fails, the brake pedal will become unresponsive. And this may lead to stopping of the vehicle in an unsafe manner. This may happen over a long time and the brake pedal may be hard to press and does not respond.
- Brake pads failure – In a well-functioning brake system, minimum effort is required to operate all components of the braking system. We must find immediate reduce in vehicle`s speed upon braking, if not the brake pads have become less responsive. The brake pedal may require increased amount of power for braking in case of brake pad failure.
- ABS Warning light – It is the most common symptom of the failure of the ABS system. The warning light gives us the signal to indicate either a failure in the ABS system or power supply failure to the ABS module. The ABS warning light will change color to amber color as in Check Engine light.
- Locking of Brakes – The Wheels may start to lock or skid while braking even under normal conditions. The ABS system is installed to avoid wheel locking during heavy braking conditions. We might experience a random clicking noise and rough braking behavior during pumping of the brakes. Then we need to replace our ABS system in our vehicle.
If you are looking for details about problems with Toyota hybrid synergy drive, start here : https://hybridautopart.com/blog/toyota-hybrid-synergy-drive-problems/
Frequently Asked Questions
- How much does it cost to replace Toyota ABS module? Prices often vary based on location and other details. It might cost you anywhere from 300 to 1000 to replace a Toyota ABS module.
- What is the OEM part number for this Toyota ABS Module? The OEM part no for this module (In the image shown earlier) is 44050-48191 and you can search in Toyota parts site with this number.
- Does this Toyota ABS Module have a warranty? Toyota OEM part comes with a one year warranty and this part can also have extended warranty.
- Is this ABS module suitable for all cars? No, each car has a separate type of ABS Module and this Toyota ABS Module with OEM part no. 44050-48191 can be fitted to Toyota Highlander Hybrid 2007.
- What is the weight of the ABS Module usually? Toyota ABS Module usually weighs around 10-16 lbs. The Toyota ABS Module pictured above weighs nearly 14 lbs.
| Brand | Toyota |
|---|---|
| Item Weight | 14.65 pounds |
| Package Dimensions | 10.1 x 9.1 x 7.6 inches |
| Manufacturer Part Number | 44050-48191 |
OEM Part Number | 44050-48191 |
https://www.amazon.com/Toyota-44050-48191-ABS-Modulator/dp/B00KTKRG2G
To get a list of hybrid compact cars, go here
Do you want to know which car has the best mpg, read this post: https://hybridautopart.com/which-hybrid-has-the-best-mpg/