Engine bay and maintenance intervals (Mercedes-Benz E-Class W124)

Contents: Weekly or every 400 km ↡ Every 9,000 km ↡ Every 18,000 km ↡ Every 12 months regardless of mileage ↡ Every 3 years regardless of mileage ↡

Engine compartment of a 2.5L diesel engine

1 – oil filler cap; 2 – dipstick for measuring oil level; 3 – battery; 4 – brake fluid reservoir for brakes and clutch; 5 – fuse and relay box; 6 – expansion tank; 7 – Upper mount of the front suspension strut; 8 – air filter housing; 9 – fuel filter; 10 – Power steering pump; 11 – glow plug control unit; 12 – oil filter; 13 – windshield washer reservoir; 14 – ABS unit; 15 – steering gear box

View from below the engine compartment

1 – engine oil drain plug; 2 – generator; 3 – Power steering pump; 4 – exhaust inlet pipe; 5 – radiator; 6 – anti-roll bar; 7 – lower arm of the front suspension; 8 – steering rod; 9 – longitudinal steering rod; 10 – steering shock absorber; 11 – steering gear box; 12 – intermediate steering lever

Rear view of the body

1 – rear main gear; 2 – lower arm of the rear suspension; 3 – exhaust system; 4 – cardan shaft; 5 – drive shafts; 6 – fuel pump; 7 – fuel filter; 8 – pressure accumulator; 9 – longitudinal thrust; 10 – transverse thrust; 11 – torque thrust

To keep your vehicle in excellent condition, it is necessary to perform maintenance on a regular basis. Maintenance should be performed both continuously and at certain intervals, which are listed below. These are the minimum maintenance intervals recommended by the manual.

If the vehicle is operated in severe conditions, such as dusty areas, low speed trailer towing or short journeys, more frequent maintenance is recommended.

Weekly or every 400 km

Check the following items:

engine oil level;
coolant level;
brake fluid level;
presence of water in the windshield washer reservoir;
condition of the battery, tires, windshield wipers and all bulbs.

Every 9,000 km

Change the engine oil and oil filter.

Every 18,000 km

In addition to all items for the 9,000 km interval, do the following.

Change the engine oil and oil filter.
On station wagon models, check the fluid level in the self-leveling rear suspension control system.
Check the gearbox oil level.
Check all under-hood components and fluid hoses.
Check the condition and tension of the auxiliary drive belts.
Check the refrigerant level in the air conditioning system.
Check idle speed and lubricate throttle linkage.
Check steering and suspension components.
Check the condition of the drive shaft protective covers.
Check the condition and thickness of the front brake pads.
Check the condition and thickness of the rear brake pads.
Check the operation of the handbrake.
Check the condition of the exhaust system.
Check the oil level in the final drive.
Check the condition of the rubber couplings of the cardan shaft.
Check the condition and operation of the seat belts.
Lubricate all hinges, locks and electric antenna.
Check and, if necessary, adjust the headlights.
Check the operation of the windshield wipers and replace the wiper blades.