CAR ENGINE MANAGEMENT SYSTEM MAIN COMPONENTS:
ENGINE CONTROL UNIT:
The engine control unit is a computer with internal pre-programmed and programmable chip used to control the engine and other components’ functions by using input sensors and output components to control all engine functions. The ECU program is use the input sensor information to calculate the amount of fuel injected and when to spark the coil in order to start the engine.
Symptoms of a damaged ECU:
If appears a “Check Engine” light on your dashboard the first thing that should be checked is the engine sub-system. If here there’s no problem, the next thing that should be checked is the PCM.
Other problems that might indicate a damaged PCM are:
- Problems while starting your car engine
- Poor engine performance of your car engine
- Stalling of your car engine
- Engine stalling or misfiring
- Erratic engine behavior
- Engine performance issues
- Car not starting
Our specialists advice is: if you are facing any of this problems please address the problem immediately to a specialist as the power train module has a very important role in the overall health of your car.
TRANSMISSION CONTROL MODULE:
A transmission control module (TCM) is an electronic mechanism that collects information and process signals to your car transmission in order to regulate the transmission gear shifting.
Without the TCM your transmission wouldn’t be able to shift gears effectively and consistently.
The TCM works closely with: engine, brake pedals position sensor, transmission fluid temperature sensor, turbine sensor, throttle position sensor.
Symptoms of a damaged TCM:
- Difficulties when trying to accelerate – delays
- Difficulties in downshifting when slowing down or coming to a stop
- Cannot shift out of Neutral
- Delay when shifting from one gear to another
Specialist advice: This problems with your transmission control module should be treated very seriously as can result in not being able to shift properly which can cause accidents and injuries and on top of that driving with a faulty TCM can cause a total and irreversible damage of the gearbox.
GENERAL TIMER MODULE (GTM)
The General Timer Module is known by several different names: Central Timer Module, body control module, gem module. Troubles in the body control module can set off a chain of events that can lead to large-scale damage to the car.
This module controls almost all vehicle functions such as, but not limited:
- Power door locks
- Vehicle theft alarm
- Remote keyless entry
- Remote radio
- Power door Locks and Unlock
- Central Locking
- Park Lamps
- Chime Warning
- Courtesy Lamps
- Dome Lamps
- Dome Defeat
- Door Ajar Switch Status
- Fog Lamps
- Head Lamp Time Delay
- Intermittent Wiper Controls
- Low and High Beam Head Lamps
- Optical Horn
- Park Lamps
The Central Timer Module is located behind the left side kick panel and it’s a high failure item.
Symptoms of a damaged General Timer Module:
- Shaking: Car becomes jerky when driving with high speed
- Misfiring of the car at high speeds
- Hesitant Acceleration (not smooth)
- Fuse box – blown out or burnt fuse
- Engine – failure to engine to crank up
- Failure in locking or opening doors
- Failure with the sound system
- Resetting clock after the engine is switched off
Specialist advice: If you are facing any of this problems address the problem to an Expert because the hardware and software needs to be reprogramed and if this job is not done properly might destroy all the functions of your car.
ELECTRONIC SUSPENSION SYSTEM:
Electronic Suspension System uses electronic components to control parts of suspension system using one or more sensors:
- Height sensor
- Vehicle speed sensor
- Steering wheel rotation sensor
- Systems vary according to:
- Type and number of input sensors
- If the air compressor is present
- Number of wheels controlled
All systems control the operation of shock absorbers or strut cartridges and most air-operated systems control ride height and quality by increasing or decreasing air in air shocks.
Air shock systems always contain an air compressor
- Has no compressor
- Control ride quality but not ride height
- Regulate hydraulic flow through shock absorber internal part
Signs of a damaged electronic suspension system:
On the instrument cluster appears 2 messages:
A) Air Suspension Failure or B) STOP VEHICLE TOO LOW
- Failed Air Strut - the car will drop more on one side
- Air Suspension compressor failed ( the compressed air doesn’t reach to the air struts)
- Cracks in the Leaking Lines that are losing the air meant to fill
- Dashboard Lights Onn
SPEED CONTROL UNIT (SCU):
The speed control unit or ESC is an electronic circuit that controls and regulate the speed of your car.
Computer programmable speed controls generally have user-specific options which allows setting low-voltage cut-off limits, timing, acceleration, breaking and direction of rotation.
The speed control unit sends information to your car computer about how fast your car is spinning at any particular moment.
Signs of a damaged Speed Control Unit:
- Transmission revs higher before changing gears
- The car transmission engage into overdrive late or never
- Breaks are harder than normal when coasting
- Speedometer behaves erratically or sometimes is not working at all
- The check engine light comes on intermittently and sporadically when accelerating
- The overdrive on/off lights blinks on and off without reason
Specialist advice & Tip: some of the problems may seem transmission related problems so it’s better to have your car checked in a service equipped with a complete diagnostic equipment.
German Experts Service Center has a complete updated diagnostic center and the experts can run a complete computer diagnosis checkup.
TELEMATIC CONTROL UNIT
Tele-matic Control Unit is the embedded system on board of a vehicle that controls tracking of the car
A TCU consist of:
Telematics Control Unit – The TCU is the unit that communicates with the automobile ECU and GPS satellite and accessed the telematics services over the wireless infrastructure.
Telematics Network Operations System – The TNOS is the hub where all the telematics services are delivered and the raw data from the TCU is processed. TNOS also performs: data management, configuration, accounting and security functions in the telematics system.
Wireless Communication Infrastructure – The WCI is the backbone for all the information exchange between the TNOS and TCUs.
Service Provider Call Center – The SPCC is the customer service representative
Service/Content Provider – SCP provides content such as: music, video, traffic feeds, etc to the TNOS
FUEL INJECTION SYSTEM
Electronic Fuels Injection System uses various engine sensors and control module to regulate the opening and closing of injector valve.
It’s composed from:
- Fuel Delivery System
- Air Induction System
- Computer Control System
Signs of a damaged Fuel Injection System:
- Starting issues
- Poor idle
- Failed emissions
- Poor performance
- Engine does not reach full RPM
- Increased fuel consumption
- Rough engine performance
- Surging and bucking under various throttle loads
- Smoke from the tail pipe
- Engine Knock or Detonation (can lead to engine failure)
- Increased fuel consumption
- Fuel odor inside and outside the car
- Oil thinning ( can lead to engine failure)
- Hydro lock (can lead to engine failure)
Specialist advice: This is a very serious problem that can damage totally your engine so please address the problem to an expert!
SAFETY RELATED SYSTEM:
For vehicles the term “active safety” refers the safety systems that are active prior to an accident.
Nowadays this area contains highly advanced systems such as anti-lock braking system, electronic stability control and electronic stability control and collision warning/avoidance through automatic braking.
The best active safety features of a car includes: blind spot monitoring, rear cross traffic alert, lane keep assist, road departure mitigation, adaptive cruise control, a following distance indicator, speed limit recognition, driver drowsiness monitoring, forward collision warning.
The Car safety features required by law are: front airbags, safety belts, LATCH child safety seat system.
Specialist advice: Even if none of this features are not affective a car mechanically, a failure of one of them can put your life or your loved ones life in danger so it’s better to address the problem to an expert once you notice it. Also any of the features listed above can be incorporated to your car’s functions if it wasn’t equipped with it from the factory.
ANTY-LOCK BRAKING SYSTEM (ABS)
An anti- lock braking system is a safety anti-skid braking system used on vehicles that prevents the wheels from locking up during braking and maintains the contact with the road surface.
ABS uses wheel speed sensors to determine if one or more wheels are trying to lock up during braking. If a wheel tries to lock up a series of hydraulic valves limit or reduce the braking on that wheel.
This prevents skidding and allows you to maintain steering control.
Symptoms of a damaged ABS:
- ABS light on
- ABS not working properly
- Traction Control is active
Specialist Advice: If you are facing any of this symptoms you should address the problem to an expert and have your car checked carefully. It might be only a sensor but it also might be a bigger problem as the ABS is directly connected with your car brakes.
Along safety, comfort is another important but subjective key which provides a significant degree of additional luxury and differs from one person to another. That’s why a variety of factors such as reaction times, driving modules, etc. must be taken into consideration.
Our experts are focused on offering and improving drivers comfort adding updating or upgrading functions of your car even if they weren’t programed from the factory or are not having GCC spectrum.
Comfort Systems offered in German Experts:
- Temperature Measurement – Fahrenheit to Celsius
- Changing Radio Frequency – USA to GCC
- Activating AMG logo on navigation
- Activating BMW M Power logo on dashboard and navigation
- RS to Audi MMI
CONTROL UNITS - REPLACING AND PROGRAMMING:
Most of the CONTROL UNITS used on today’s cars are having the chip locked or programmed only for that certain car. This feature doesn’t give the option of changing the control unit from one car to another fact that leads to high costs in buying and programming new control units in case a car is having a failure with this part of the car.
Our engineers are proud to say that they have the knowledge and high technological tools to fix and program Used Control Units from one car to another, keeping exactly the same functions as the car had before the replacement. This feature we can proudly guarantee that cannot be done not even by the Official Dealer.
Same as the smart phones and personal computers we are using today, cars also had been equipped with advanced technology, reaching the point where are completely operated by smart computers that regularly needs to be updated and upgraded.