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About Mercedes-Benz 300SD

Belonging to the Mercedes-Benz W116 and W126, which are a series of S-Class automobiles and the S-Class is formerly known as Sonderklasse (German for "special class", abbreviated as "S-Klasse"), and is Mercedes-Benz's flagship as well as the successor to Mercedes-Benz Type 300, Mercedes-Benz 300SD was built by the Daimler-Benz from 1978 to 1993 as a full-size luxury car. Originally introduced as a model in the first-generation S-Class lineup, 300SD had experienced three-generation S-Class covering ten model years before being discontinued and replaced by the 300SDL for the 1986 model year. But in 1992 model year, the 300SD reappeared in the market.
The first-generation Mercedes-Benz 300SD (W116) was produced from 1978 to 1980 and made its debut for the 1978 model year when the S-Class was in its first generation. It was offered in only one body style, 4-door sedan and came in only one trim level. "SD" in its name stands for S-Klasse-Diesel in German. During this generation, 300SD was powered by 3.0 L I5 diesel engines rated at 110-120 hp and 168-170 lb-ft of torque and power was sent though a 4-speed automatic transmission to the rear wheels. The second-generation 300SD (W126) was available between 1979 and 1985 model years. Back then, it got power from a 3.0 L I5 diesel engine bumping out 123 horsepower and 184 lb-ft of torque. The more recent 300SD (W140) arrived at the market in 1991 for the 1992 model year in the United States and Canada. Still available as a 4-door sedan in short wheelbase, 300SD was driven by a 3.5 L Turbo-diesel I6 good for 148 hp and 229 pound-feet of torque. And power was still sent to the rear wheels through a 4-speed 4G-Tronic automatic transmission.

Mercedes-Benz 300SD Common Problems & Maintenance Tips

As a member of the reputed S-Class, which is as synonymous with state-of-the-art luxury and safety features, Mercedes-Benz 300SD could never be a disappointment. However, the fact that you could never ignore is that the 300SD now is not a young model and these common problems will inflict it:
First, many Mercedes-Benz 300SD drivers complained about the cooling system failure accompanying with engine failure on the vehicle. This could be the worst situation that a driver could ever meet during driving since engine failure is bad enough, but the cooling system failure will deteriorate everything. According to experienced 300SD drivers, when the cooling system starts to leak coolants, the engine will also keep overheating and stay at a high operating temperature. If it could not be cooled down, it will have performance issues soon such as misfiring, stalling, hard starting and even inability to start. Finally, the vehicle will also experience a decrease in power, acceleration and fuel economy. When both the Low Coolant Light and Check Engine Light come on, you can inspect if the 300SD intake manifold gasket, fuel pump, coolant reservoir, cooling hose, oil filter, air filter, engine control module and valve cover gasket are working properly or not.
Second, on Mercedes-Benz 300SD, the transmission failure is also a very serious problem. The transmission system undertakes the responsibility of transferring the power from the engine to moving forces of the vehicle, once it has something wrong, the vehicle will have drivability problems and become impotent. Professional 300SD repairmen warned that once there are clunking or grinding noises coming from underneath the vehicle, you should be alert. Soon, you will notice the transmission indicator not matching the gear, leaking transmission fluids on the ground, vehicle starting in another gear or refusing to go into gear, transmission slipping and surging as well as difficulty in shifting gears. All these symptoms could be attributed to the 300SD transmission assembly, shift cable, automatic transmission filter, automatic transmission shifter, transfer case seal and clutch fork.
Besides, please attach enough importance to routine maintenance on vulnerable auto parts of Mercedes-Benz 300SD. Parts including 300SD seat belt, windshield wiper, wiper blade, antenna, cabin air filter, fog light and headlight need to be maintained routinely to ensure a perfect ride.
For your Mercedes-Benz 300SD's overall excellent quality, please choose OEM Mercedes-Benz 300SD auto parts as the only option for parts replacements. happens to own a broad selection of lowest-priced manufacturer-warranted genuine Mercedes-Benz 300SD auto parts. All these OEM 300SD parts are guaranteed to be high-quality, reliable and durable, you can shop them now with confidence since our hassle-free return policy and quickest delivery service will get your back as well.