Archive for March, 2019

Signs of Internal Transmission Problems in Porsches

The raging debate on which is better between the manual stick shift driven car and the automated one always elicits different reactions among drivers. Over time, the transmission systems in vehicles have changed from manual to automatic especially in luxurious vehicles models. The Porsche, for its part, has a sophisticated internal transmission system that enables the car to handle speeds impressively, a factor that has contributed greatly to its success in the market.

Functions of the Internal Transmission

The transmission system is made up of a gearbox, several shafts that control the front and rear wheels, and a clutch. The transmission is responsible for the turning of the wheels at particular speeds as a direct result of the fuel burning in the engine. The transmission is therefore directly involved in increasing the speed at which the engine turns in order to increase the speed of the rotation of the wheels and vice versa. The transmission also increases and decreases the torque as the speed varies.

Causes of Transmission Problems

Transmission problems in your Porsche can frustrate your driving experience and make it unpleasant to drive your otherwise perfect ride. The most common causes of transmission problems are:

Mechanical failures

The transmission system has a number of components working together to ensure that the car moves exactly as the driver needs it to. When any of these parts break down, then transmission is not able to operate smoothly as a result of lack of communication between the involved parts. The parts that commonly cause such issues include the solenoid, which can malfunction due to low levels of transmission fluid. Additionally, the torque converter, whose needle becomes worn out over time, is also often a major culprit when the internal transmission of your Porsche fails.

The clutch can also develop problems, which in turn causes the solenoid to lock and this directly affects the amount of transmission fluid that gets into the torque converter. This affects the output of the transmission system.

Low levels of transmission fluid

Other than the problems that arise from the breakdown of the parts, low levels of transmission fluid also cause poor performance by the transmission system. These low levels can be brought on by leakage due to broken seals.

Contamination of the transmission fluid

This happens especially when the coolant found in the radiator finds its way into the transmission fluid and creates a situation commonly referred to as cross-contamination.

Signs of Transmission Problems

Some of the symptoms that you will notice in your Porsche when the internal transmission has a problem include:


Slipping is the term used to describe the situation where the gear changes while you are driving all on its own. It could be that your car starts to accelerate when you were driving slowly or decelerate when your intention was to accelerate.

Delayed responses

When you need your car to accelerate but there is even the slightest hesitation and the engine revs before it actually picks up the speed, that is an indication that the transmission has a problem.

Unusual noises

When the transmission fluid gets really low and the components that form the transmission system become worn as a result, you may hear some clunking noises coming from the car when you try to increase the speed in your Porsche.

Leaking fluid

Transmission fluid is usually a shade of red-brown color. If you notice a pool or spots of liquid under your car around the front going on to the middle then there is a chance the transmission fluid is leaking.

Rough gear shifts

Shifting from gear to gear in the Porsche should ideally be barely noticeable, so if you begin noticing jerky or halting shifts, then it’s likely that you have a problem in the transmission.


In the event that you observe any of the signs that Porsche Transmission Issue Check have been listed above, you should take your car into an auto shop so that a qualified technician can have a look and sort out the problem as soon as possible.

The need to have access to a reliable servicing partner you can trust is something that we at Star Motors understand well. For residents of San Juan Capistrano, CA and other Southern Orange County areas, we are available to help with your car’s problems as soon as you give us a call.

Reasons Behind ABS Modulator Failure in Mercedes

A problem in the braking system in your vehicle can have serious ramifications when it comes to the safety of both you and your passengers. With the workmanship that goes into the design and manufacture of each Mercedes, many owners never expect it to develop problems, but some, like ABS Modulator failure, may become an issue.

What is the ABS Modulator?

The Anti-lock Braking System Modulator, or ABS modulator, as it is commonly referred to, is a vehicle component that is responsible for the optimization of the brake pressure in each wheel. The ABS modulator optimizes the pressure in the brakes so as to prevent the wheels from locking up, especially in case of a hard brake. The modulator comes in handy in the event that the driver applies the brakes in a hurry with the intention to bring the car to a quick and immediate stop.

In such a situation, the driver is likely to apply more pressure on the brakes than is normal. This may cause the wheels to lock up, and the result will be that the car will skid off. Needless to say, such a situation may easily result in an accident because the driver will no longer have control of the wheels. The ABS modulator is therefore an important life-saving feature in the Mercedes.

However, when the ABS modulator senses the excessive pressure that the driver applied to the brakes, it immediately sends out an impulse into the brake calipers that are then released very briefly. This brief release in turn prevents the wheels from locking up. Simply put, the ABS modulator helps to increase and decrease the brake pressure automatically in order to maintain the traction in the wheels.

Causes of ABS Modulator Failure

One of the major causes of the ABS modulator failure is contaminated brake fluid. Because the ABS modulator is made up of metal and rubber parts, it can be affected by contamination in the brake fluid. The most common contaminant in this case is moisture that finds its way into the brake fluid over time. This then causes the metal parts to be corroded and eventually the brake calipers will break down.

In addition, the corrosion can cause the valve in the modulator to get stuck. This makes the modulator’s operation to be largely impaired since the valve is no longer able to open and close and instead it remains open.

Another possible cause of an ABS modulator failure is the inevitable wear and tear that occurs in moving parts. This wear and tear can be accelerated by leaks in the brake fluid that result in increased friction between the moving components in the modulator.

Signs of ABS Modulator Failure

Some of the tell-tale signs that your Benz could have a problem in the ABS modulator include:

ABS light is illuminated

One of the obvious signs that point to a problem in the ABS modulator is the warning light that comes on on the dashboard. This is because of the computerized system through which the modulator functions that is connected to the car’s computer. A problem in the modulator will likely be diagnosed by the computer and an alert will be created through the ABS light on the dashboard.

Poor brake pedal response

Because of the relationship between braking and the ABS modulator, the entire braking system of the car may be compromised by a problem in the modulator. This is because the pressure that is applied during the braking process is transmitted through the modulator, which then triggers a reaction in the wheels. As a result of the breakdown in the ABS modular, the car may not respond to the braking command in time. You may also have to exert more pressure on the brake pads to get a response than you would regularly.

Locked brakes

One of the functions of the ABS modulator is to prevent the brakes from locking, so if they do not work correctly, the brakes might lock, causing the car to skid and possibly result in an accident.

Mercedes Car

In the event that you experience any of these symptoms in your Benz, you should immediately take your car to a licensed shop for a proper diagnosis and resolution of the problem.

Here at Star Motors, we have the experience and qualifications to help get your car back in good shape in record time. All you need to do is give us a call if you live in the areas around San Juan Capistrano, CA and other Southern Orange County areas.

* Mercedes Car image credit goes to: Mih_alex.