20 Most Recent 2003 Mercedes-Benz E-Class - Page 9 Questions & Answers

as a first step check heating water circulation pump which is in engine compartment.

Sounds like the transmission is stuck in "Limp Home " mode. Does it reset when you turn off the ignition ?
If it does most likely you have a typical problem of oil in the wiring loom, it seeps through the gearbox connector and through capillary action ends up in the transmission control unit. Sometimes cleaning it up with electrical cleaner works. They sell a kit to prevent it happening in the future, simple to fix.
If it doesn't reset it could still be the above problem.Best get it to a dealer or a good indie with diagnostic software. Its unlikely to be a transmission fault.

I would recommend that you check the fuse panel. Make sure that you thoroughly inspect the fuses.

check brake light bulbs for fault/washer check water level in bottle/alternator faulty

starter is right hand side under manafold

your moter mounts are bad replace moter mounts.

Check the coil packs they are overheating and need replaced or the ECM.

The service brake uses brake shoes that are within the rear wheel hubs and make no use of the brake pads and rotors. The service brake should be on maximum on the 6th click. There are two points of adjustment. The easiest and most usual is the service brake cable adjustment in the middle of the car, I confess I draw blank here but I think there is an access panel under the rear seat (as per the C class) that permits handbrake cable adjustment without having to do it from under the car. If the service brake cannot be adjusted enough at the handbrake coupling then the each rear hub will need adjusting. First slacken the hand brake coupling - this will allow greater adjustment in future when the shoes have been adjusted. Start with the Left rear wheel. Remove one wheel nut only but leave the wheel on and jack up the car at the back left until the left wheel is free to rotate. Position the empty wheel nut hole at the 1 o'clock position and shine a powerful torch into the hole. Towards the top edge of the hole you should see the toothed edge of the service brake adjustment wheel - you may have to rotate the road wheel backwards and forwards a few degrees to locate it. Insert a screw driver and click the adjustment teeth upwards, one tooth at a time. Keep doing this until the road wheel rotation is stiff, then take about 5 clicks downwards to release the brake shoe contact. Lower the car, put back the removed wheel nut and tighten. Remove a wheel nut from the right road wheel and lift the car until it can freely rotate. Position the nut hole at about 11 O'clock until you can see the adjustment teeth. This time the teeth need to be clicked downwards (note this important difference) until the rotation is hindered. Then click upwards for 5 teeth to release the shoes. When both sides have been adjusted the remaining fine adjustment can be done with the service brake cable adjustment in the middle of the car. The brake should begin to come on at about 3 clicks and be very stiff at 6 clicks with almost all your effort to get to 7 clicks. Unless you drive around with service brake left on the shoes, with occasional adjustment, should last the life of a car. If no amount of adjustment sorts out the service brake the shoes may need replacing and I would leave this to the Mercedes guys as the job is a bit of pain.

hope this helps in some way

Have you checked your fuses? Check your owners manual for location of your fuse boxes. Normally under rear seat and under hood in mercedes. Check the reference card in the fuse box for any fuses corresponding to the engine,I.E. engine, Fuel pump,etc. Check those fuses to see if any are blown. If the fuses are all good then it is probably the ecm (electronic control module).

The 2003 e-class doesn't have an oil dipstick. Engine oil level is gauged electronically. Park the vehicle on level ground and cycle through the display using the buttons on the steering wheel. One of the options there will assist with the correct oil level and let you know if it's ok, too much or too little. Do note that there is an oil filler tube with a cap but this is really for filling the oil as well as removal with a vacuum suction tool in the work shop. The cap doesn't have a dipstick at the end.

16 "

try this fuse layout for the mercedes as iam not sure what you need to know