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Mercedes Tech Tip: Leaks At Internal Steering Lines or Steering Gear Housing

If you experience leakage at the steering line connection in the above model vehicles, replacement of the entire rack and pinion system is not required. You may now replace the O-rings, which are available as separate parts for repairs of the affected steering line. More

Lexus Tech Tip: A/C Condenser Fan Relay Corrosion on 1998-2000 LX 470s

Some 1998-2000 model year LX 470 vehicles may have a condition in which the A/C condenser fan continues to run after the ignition is turned off due to corrosion in the relay connector. A repair kit (P/N 88840-60070) consisting of a new relay and sealant has been made available to correct this concern. More

Hyundai Tech Tip: No Spark, No Injector Pulse on 2002 Sonata 2.4 L Models

You may get a customer complaint that the vehicle died while in Drive, then wouldn’t start. There is no spark and no injector pulse, and no engine rpm on the scanner while cranking, and it's setting a Crankshaft Position (CKP) sensor code P0335. More

BMW Tech Tip: Steering Column Rubbing and Scraping Noises

The customer may report a rubbing or scraping noise, which occurs when turning the steering wheel from left to right. While there are a number of components that can cause this type of noise, this bulletin is specifically related to those noises that occur directly at the steering shaft. More

Audi Tech Tip: Faulty Hose Composition Causes Odor on 2001-2006 Models

Audi owners may complain of an odd smell from the car. It may appear as if coolant is leaking from the coolant reservoir. A pressure test on the reservoir may reveal that the hose between the coolant reservoir and the engine is weeping coolant through the hose material. More

Brake Safety Technology: Mercedes-Benz Brake Assist & Sensotronic Systems

One of the new safety technologies you’ll find in a growing number of European and Asian vehicles is Brake Assist (or BAS for Brake Assist System). The technology actually was invented more than a decade ago, and was first used back in 1996 on Mercedes S-Class and SL-Class cars. In 1998, Mercedes made Brake Assist standard on all of its models. More

Z Sport, Part II: Powering Subaru Engine & Chassis Upgrades

A few months back, I highlighted a project car being built by Z Sport. The car is now back together and running. Charles Damewood, the car’s owner and a principle at Z Sport, has been driving the car to break in the engine, and get an idea of what needs to be sorted out as far as engine management before doing a full on dynamometer test. As soon as fuel mapping and software issues are resolved, we... More

Ignition Sensor Diagnostics: Variable-Reluctor, Hall Effect and Magneto-Resistive Sensors

Although ignition failures are relatively common, they're not the easiest problem to diagnose. To help you get started on what I call a "systems approach" to ignition diagnostics, this article is intended to provide an overview of how to identify ignition system configurations, identify three different types of ignition sensors and understand several basic sensor-operating strategies. More

Brake Tech Feature: 8 Myths that Could Be Holding You Back from Performing the Best Brake Job

It could be how you select friction materials, apply brake lubricants or machine rotors. You could be doing something that does not make sense, but you learned it from another technician and it could be holding you back. Here are eight brake job myths that could be holding you back. More

Tech Feature: Diesel Crankshaft Basics

Whether in a gasoline or diesel-powered engine, the crankshaft is a key component. With diesels, the crank is typically thought of as bigger, heavier and harder to get in the aftermarket. Some preconceptions are factual, say experts, while others are unfounded. More