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Meredes-Benz Specialists

Over 20 Years Experience

Throttle Body

At the bottom of the accelerator pedal position sensor is the PCM (powertrain control module). What the PCM does is it sends out separate five-volt reference signals to two position sensors in the throttle body. This is done for safety reasons. If one of the sensors has a problem, the car will go into what’s called “limp mode”. With only one sensor working, the car will only be allowed to go 25 or 30 miles per hour. Both sensors work together in measuring the throttle body in opening and closing of the valve that allows a mixture of oxygen and fuel to accelerate and slow down the vehicle. When the pedal is stepped to the floor, the voltages change in opposite directions. As the pedal comes back up to off position, the sensors again go in the opposite direction of each other. It’s a way of checking itself to make sure that everything is functioning properly.

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A Service

We first perform a safety inspection for your vehicle. Checking all your interior and exterior lights to make sure they are working properly. Then we perform a function test of your wipers to ensure functionality. We check all seatbelts for damage and proper function. Then there is a function test of the parking brake. At the front of the vehicle we make sure your safety latch and hinges on your engine hood are working properly. Next, we top off all fluids such as brake fluid, power steering fluid, coolant, and window washer fluid. Lastly we check for any leakage of any major components.

The next step is to perform a test on your battery to make sure it will pass a low test and to ensure that it’s in proper condition. After that we verify the condition of the front and rear brake pads and rotors. We then inspect your tires for any damage and proper wear pattern. After all the tires are inspected, we also check the tire pressure and rotate them if needed. The last steps are performing that synthetic oil and oil filter change.

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B Service

Mercedes-Benz “B Service” is usually done every 20k miles or every two years. An initial 32-point inspection is done to the car. These checkpoints would include axels, CV boots, suspension components, engine belts and mounts. For the oil change we use manufacturer O-rings, engine oil and oil filter. Then we inspect the brakes and perform a brake flush. After testing the battery we torque the wheels on your vehicle to make sure they are on securley. Lastly, we perform a computer diagnosis and maintenance reset.

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(626) 448-1468


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