Mercedes-Benz automobiles have long enjoyed a reputation for longevity, safety, expert engineering and quality craftsmanship. But Mercedes cars do require care and upkeep. Costs of repair and parts are high, and trained mechanics have long waiting lists, so although these vehicles are robust and high-tech, there are many things an owner can do to help keep the car out of the shop, save money on fuel, and ensure reliability and performance for years to come.
Oil changes are perhaps the single most important--and cost-effective--maintenance procedure to ensure engine life. Motor oil loses its ability to lubricate engine parts over time, and collects dirt and metal particles-causing engine parts to work harder and wear quicker. Synthetic oils cost more than regular oils, but last longer and perform better. Many owners switch to synthetics, if not already installed in the vehicle, from the first day of ownership. Follow regular scheduled oil changes, about every 7,500 miles or six months. If you choose to stick with traditional oil, it should be changed at least every 5,000 miles.
Don't forget to change the oil filter with every oil change. Fuel and air filters are also important maintenance items, as they keep fuel, injectors and combustion parts clean.
Tires not only provide ride comfort and safety, they also play a large role in fuel economy and overall performance. Tire inflation pressure should be checked every week, adjusting pressure according to the inflation chart, usually located on the driver's door sill. Filling tires with nitrogen, rather than air, is the new trend for automobiles. Nitrogen has been used to fill tires on race cars, airplanes and the Space Shuttle for years. Unlike air, nitrogen does not expand or contract as the temperature changes, and does not retain moisture. Stable tire pressure means longer-lasting tires and increased fuel economy. Tires should be rotated and balanced every six months, and inspected for wear or damage regularly.
A/C compressors are very costly, but their lifespans can be prolonged by following a very simple procedure. A/C systems operate on refrigerant gas, which also lubricates the system components. When the A/C in not in use, hoses dry out and shrink, causing loss of refrigerant and component failure. A simple routine of running the A/C at least every week for 10 minutes--even in winter months--will help keep things in order. Keeping the system charged with refrigerant will help prevent future damage, and it should be checked and refilled every year.
Tune-ups on recent model Mercedes engines is next to impossible for the average owner. Most replaceable parts and engine components are buried beneath covers, hoses, wiring and emission control gadgets. But tune-ups are a vital part of any vehicle's maintenance schedule. Consult the owner's manual for recommended factory tune-ups, and stick to it. A little cash outlay now is far better than a big credit-card bill later.
Belts and hoses run the entire engine system. A single serpentine belt runs the vehicle's power steering, water pump, alternator, and air conditioning compressor. If it fails, these systems do, too. Timing belts need to be replaced every 50,000 miles or so, depending on the engine. Vacuum and coolant hoses, oxygen and temperature sensors should be checked periodically, and replaced at regular intervals recommended in the owner's manual.
Regularly washing and waxing your Mercedes will help prevent dirt and road chemicals from oxidizing and damaging paint. Detailing and cleaning the interior will prolong carpet and upholstery life, and periodic application of plastic and rubber protectant will guard against cracking and drying of the dashboard, door panels and weatherstripping. A clean engine compartment will allow you to better spot leaks, and get you in the habit of inspecting belts and hoses.
Check oil, coolant and washer fluid levels weekly, power steering, brake and transmission fluid monthly. It is very important to use the fluids recommended in the Mercedes owner's manual, particularly for brakes, transmission and steering. The use of other fluids may damage key components, and create dangerous driving conditions.
