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

Mercedes-Benz W211 Models are equipped with two batteries. The batteries in your w211 are an absorbed glass mat (AGM) type, which is different from the older style lead acid batteries. AGM batteries house the battery acid in glass mats. Lead acid batteries house the fluid between lead plates. AGM batteries are made of very thin glass fibers woven into a mat. This increases the surface area enough to hold sufficient electrolytes on the cells for their lifetime. Lead tends to absorb some of the acid, shortening battery life. There are positives and negatives when using AGM over lead acid batteries. For example, an AGM may charge faster, but is more susceptible to damage from overcharging. They produce less gas than a lead acid battery, can be mounted in any position (do not leak) and are safer for the environment because of this. One downside is the increased cost. Also, charging systems have evolved along with the battery type, allowing greater control of charging current via sensors and computer controlled adaptation. The main battery in W211 models is located in the center of the trunk, mounted in a well, below the trunk carpet. The auxiliary battery is located in the right side of the engine compartment, near the HVAC intake. When replacing your battery, be sure to use a high quality unit. Replacing the battery can be done in a short amount of time. Read the battery connection notes before disconnecting the battery. Before disconnecting your battery, remove the key from the vehicle and store it in a safe place and note the radio presets. When the battery is reconnected or loses its charge, the following items may need attention (depending on vehicle equipment). You may have to reset your clock, enter the radio presets, initialize power windows, initialize the sunroof and normalize the steering angle sensor. See our tech article on battery replacing, for info on the main battery and jump-starting. The auxiliary battery supplies power for a limited time if system charging or battery voltage drops. The battery control module monitors system voltage. If voltage reaches a low point, the auxiliary battery relay closes to connect the battery to the vehicle fuse blocks. Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.

All the computers are needing to be reset. One thing to try is to start the car and then turn the steering wheel lock to lock several times. This sometimes rests everything. There are also several club sites online that have all kinds of assistance.

There may be some residue from the oil change, or something was left loose . It needs to be looked at. Return to the service center and have them take a look.

Any codes? Can't turn off? could be broken switch cold and heat.

under hood passenger side against firewall under plastic cover

Possibly faulty fuel pump or blocked filter. or just simply out of gas?

You named your own problem.

hello u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store the girl in the chat box can help u instantly... im a frequent buyer there since Im a mechanic so take help from there

On the mirrors it is possible that they are electric so look on the adjustment switch area to see if their is a switch there. More than likely you simply can push them in and they click folded and to reset simply pull them out again. For the seats that is a different problem. You can look in your manual to see the fuse arrangement and then pull out the appropriate fuse to check if it's toast. If that doesn't work then you need to go to a Mercedes dealer and they can use their computer to see what's wrong. Shouldn't be a major repair if both seat heaters are not working. Good luck

follow plug leads back to coils, looking at engine start at left

Have you tried both fobs? sounds to me like the button itself on the fob above the MBZ symbol for locking isn't working. You can take the key fob apart, and check the little buttons on the PCB / board itself for function. Sometimes they get stuck with dirt / grime to the point where the button itself under the plastic shell is not engaging.

Fuse or fuses check fuse box under bonnet

It sounds like the fuse went out. The cigarette lighter fuse is either 2 or 5 in the main fuse box. Here's a diagram: http://www.mercedesmedic.com/e-class-1996-2002-w210-fuse-chart-location-designation-diagram/ You can buy the fuses at Autozone, and often if you ask nicely they'll replace them for you.

Really !! You own a prestige car do the right thing just buy one or get one from a parts yard

Loose wire ?

Generally leaking rear bag.. check pressure at rear.

I would get your vehicle to a workshop

sounds like crank sensor buy a hella brand, not a cheap one

To reset the lights you need to drive the car for 50 mails and this will reset the light .

Faulty parktronic sensor its 4 of them the are normal located in the bumpers 1 in each corner