Cars go in limp mode when the On-Board Diagnostic (OBD) system detects a critical problem. The main function of limp mode is to prevent further damage to the engine or transmission.
Limp mode reduces engine output, limits the RPMs and speed, prevents the transmission from shifting gears. Limp mode allows you to reach up to 40 mph speeds.
Limp mode is also called "emergency mode" or "limp home mode".
Common symptoms of limp mode include:
In this guide, you will learn how to diagnose headlight problems. For example, cases where you have replaced the light bulb, but one of the headlights is not working.
Most headlight failures are caused by a blown fuse. Other common problems include bad relay, switch or module. Wiring problems, especially inside the headlight, can also cause a headlight to stop working.
In this guide, you will learn how to clean an ABS wheel speed sensor that may be dirty and is triggering the ABS light to come on.
Cleaning your ABS sensor is very easy.
One or more dirty wheel sensors can cause the system to trigger the ABS light. Most cars since 2000 will have at least two or more anti-lock brakes sensors.
If your ABS light comes on, it is recommended to read the fault codes with an ABS scanner to find out which sensor is defective. If an ABS scanner is not available all sensors should be cleaned.
In this, article we look at common problems that cause a clunk or thud noise when taking foot off the accelerator pedal.
Car thuds when letting off-gas
Noise when taking the foot off the accelerator
Clunk noise when letting off the gas pedal
Knock sound when letting off-gas
Worn mounts, suspension and steering problems can all cause a knocking noise when taking the foot off the accelerator pedal.
Let's take a look at some of the most common problems.
A car won't start even with a jump because there is a poor connection between the cable clamps and the battery which causes the click..click..click symptoms. Another common problem is that the key is not being recognized by the vehicle.
Unfortunately, you or a loved one got in an accident. Even though the vehicle may seem to have gotten very little damage, there is a high chance that the car won't start even after a small collision.
In this guide, we go over common reasons why your car won't start after an accident. It is important to realize that vehicle manufacturers implement various methods to prevent engine start after an accident.
Clock spring (clockspring) is a device that contains a wound up wire (ribbon cable) inside and allows the airbag, horn and steering wheel buttons to stay connected as the steering wheel is rotated when you make a left or right turn.
If airbag light on your car is on, the most likely cause is a defective Passenger Occupancy Mat, (also called Passenger Sensor, Passenger Seat Sensor, Passenger Weight Sensor, Occupant Detection Sensor, Airbag Weight Sensor, OCS sensor, ODS sensor, FRS sensor).
A sensor mounted in the front passenger seat, senses when someone is sitting in the passenger seat. It is one of the most common problems with the airbag systems in most cars including Mercedes, BMW, Hyundai, Kia, Honda, Audi, Toyota, Chevy, Subaru, Nissan, VW etc.
An OBD-II scanner, allows you to read and clear Diagnostic Trouble Codes (also known as fault codes, DTCs) on vehicles 1996 and newer.
Your dealer and mechanic use OBD-II scanners to diagnose most of the problems with today's vehicles. While the scanners used at the dealership are the most advanced and expensive, aftermarket scanners are readily available for DIYers who want to troubleshoot their own vehicles.
Which OBD-II scanner should I buy?
Entry-level OBD-II (OBD-2) scanners start at about $20 but can only diagnose the check engine light.
One of the most common problems that can trigger the ABS warning light to come on is a faulty ABS wheel speed sensor.
An ABS wheel speed sensor counts wheel revolutions. It reads the wheel rotation and measures it in revolutions per minute (RPMs). It should not be confused with the gauge on the dashboard that displays the engine RPM via the tachometer.
Group 94R battery is used on a range of vehicles, specifically passenger vehicles and light commercial vehicles. It is often installed on vehicles manufactured by Audi, BMW, Mercedes-Benz, Porsche, Volkswagen. Alternative names used to refer to this battery are H7, L4, LN4.