ABS Archives - Import Car
DOT 4 and 5.1 Low Viscosity Brake Fluids

Changes to vehicles have forced manufacturers to introduce low-viscosity formulations for DOT 4 and DOT 5.1 brake fluids.

VIDEO: What Happens When An ABS WSS Fails?

Common wheel bearing failures and the resulting codes. This video is sponsored by BCA Bearings by NTN.

VIDEO: Setting The Air Gap For Wheel Speed Sensors And ABS

You should never remove the wheel speed sensor from a new wheel hub. Here’s why. This video is sponsored by GMB.

VIDEO: Don’t Ignore ABS Warning Lights

Make sure the ABS light is out on the dash. This video is sponsored by Auto Value and Bumper to Bumper.

Servicing Mercedes-BENZ ADAS Systems

A great piece of advice is not to erase codes to see if they come back.

Cartridge (Gen 1) Wheel Bearing Installation

These types of bearings are used by Toyota, VW and many other import nameplates.

Bleeding And Flushing Of ABS Systems

When debris gets trapped inside the ABS module, it can prevent the solenoids from fully closing after opening.

Volkswagen: ABS Fault Code 02757 Diagnosis Tip

Models: 2011-2014 Jetta, Jetta Sportwagen, Golf/GTI, Tiguan, Eos, 2012-2014 Beetle, Passat

Toyota Camry Tech Tip: ABS Noise, Warning Lamps And Code C1431

Some 2012-’13 model year Camry vehicles may exhibit a condition where ABS brake actuator pump motor noise is heard from the engine compartment with Brake ABS and/or TRAC warning lamp(s) illuminated and DTC C1431 stored.

Active Wheel Speed Sensor Logic

Firing the “parts cannon” at an active ABS wheel speed sensor code often results in a misdiagnosis and an unhappy customer. It may start with the wheel bearing hub unit or wheel speed sensor. If those parts do not resolve the problem, the technician may fire the parts cannon at the ABS hydraulic control module. Typically, the customer’s patience and wallet runs out before the car is fixed.

Thinking Through False ABS/ESC Activation Events

Electronic stability control (ESC) became a mandated safety feature for the 2012 model year. Along with all of these advancements, false activation complaints have surfaced. Solving them has been a diagnostic conundrum through the years. False activation incidents involve the ABS modulator taking over braking or intervening to restore vehicle stability. The customer may feel feedback in the brake pedal like a pulsation or sudden drop. Some may also experience a drop in power or the vehicle may suddenly pull in one direction.

Nissan And Infiniti ABS Service: Good Working Order Of The Basic Brake System Eases Diagnostics

On early models, wheel speed sensors send an AC voltage signal to the ABS control module. On later models, active wheel speed sensors change the voltage signal produced by the ABS control module. Active wheel speed sensors are more accurate and work at lower speeds. This is why they are found on most Nissan/Infiniti models after 2012.