Tech Tip: Mercedes-Benz A/T Fluid Leaks at the Electrical Connector
A 2002 ML 500 with a 722.6 automatic transmission may leak oil in the area of the electric connection. Secondary concerns may be oil in the wiring harness. Perform the following procedure to resolve the problem. Clean the transmission in the affected area and replace the electrical connector and the related O-rings ….
Tech Tip: Diagnosing Wheel Speed Sensors
Wheel speed sensors (WSS) provide essential wheel speed information not only for anti-lock brake systems (ABS), but also for traction control and stability control systems. Some vehicles even compare the wheel speed sensor readings against the vehicle speed sensor (VSS) to make sure all of these sensors are accurate and working correctly. In some situations, it is also possible that the ….
Tech Tip: Choosing the Right Coolant
What makes choosing the right coolant so confusing today is that the automakers themselves can’t agree on what type of coolant chemistry is best for their vehicles. Some vehicle manufacturers prefer one type of corrosion inhibitors in their coolants, while other vehicle manufacturers may insist on a different type ….
Tech Tip: Mercedes-Benz A/C Compressor Drive Belt Noise
If you receive customer reports in the affected vehicles listed below of noises at the refrigerant compressor, the cause could be a defective belt pulley or belt pulley bearing. The pulley and pulley bearing can be diagnosed and replaced with the compressor still installed in the vehicle by following the below procedures ….
Tech Tip: Choosing the Right Brake Friction Materials for Your Customers’ Vehicles
One thing you can always count on with brakes: sooner or later the brake linings will wear out and have to be replaced. Every time the brakes are applied, the pads rub against the rotors and wear just a bit. After 40,000 to 60,000 miles, the front pads are usually worn down to minimum thickness specifications and need to be replaced. The rear pads or shoes typically last 20,000 to 30,000 miles longer, but they also eventually wear out ….
Tech Tip: Proper Tools Essential for Handling TPMS Issues
Just as the sports world claims you can’t identify the players without a program, the tire industry chants that you can’t fix a problem without the right tools. The world of tire pressure monitoring systems, or TPMS, is no different. In fact, having the proper tools is critical to servicing vehicles equipped with TPMS. While technology has done its best to ….
Tech Tip: Mercedes-Benz Low-Range Lamp Flashing/Code P1831
If a customer with a 2004 ML 350 V6-3.7L reports that the low-range light flashes rapidly (18 times) after vehicle start with fault code P1831 (positioner motor, position sensor or power supply is faulty) in the transfer case ECU, do not replace the transfer case motor. This is caused by temporary loss of communication between transfer case control module and shift motor position sensor. To resolve the problem ….
Tech Tip: Shedding Light on Headlamps
The loss of a headlight makes nighttime driving hazardous, and may even attract the unwanted attention of the local police. A burned-out taillight, stoplight or turn indicator lamp creates a hazard for other motorists because these lamps signal a vehicle’s directional intentions to other drivers. Bulbs that provide illumination for instrumentation are also important because they allow the driver to monitor the speedometer and other ….
Tech Tip: Finding the Right Level of Exhaust Noise
Exhaust noise sells mufflers and pipes. Exhaust noise can be irritating, as when an original equipment muffler or pipe rots and blows out. Or, it can be pleasing in the case of a high performance vehicle with a throaty growl when it accelerates. Either way, noise generates exhaust work and parts sales. How people react to noise depends on a number of factors. They say that introverts are less tolerant of noise than people who are ….
Tech Tip: Brake Friction Materials – Good, Better or Best?
One thing you can always count on with brakes: sooner or later the brake linings will wear out and have to be replaced. Every time the brakes are applied, the pads rub against the rotors and wear just a bit. After 40,000 to 60,000 miles, the front pads are usually worn down to minimum thickness specifications and need to be replaced. The rear pads or shoes typically last 20,000 to 30,000 miles longer, but they also eventually ….
Tech Tip: Mercedes-Benz Brake Pedal Switch Adjustment
Fault codes C1200, C1201 or C1202 may be set in the ESP control module in the event of a misadjusted brake pedal switch on the following models: 129,170, 202, 208, 210, 215 and 220. Before adjusting the brake pedal switch, use DAS and check the switch for proper voltage supply. If replacing the switch, ensure that the correct part number is installed based on the vehicle model.
Tech Tip: WORLDPAC Offers Tips for Resetting Service Lights on BMW, Mercedes, Volvo, Honda and Toyota Vehicles
For all BMWs you must have the driver-side door shut to reset the service lights. On E60 and later models, it may also be necessary to buckle the driver-side seat belt in order to reset the service light. Keep reading for additional service tips from WORLDPAC.