Mercedes-Benz S320 Repair and Maintenance - Get an online auto repair estimate for your Mercedes-Benz S320
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Mercedes-Benz S320 Repair and Maintenance
Mercedes-Benz S320 Model Years
Mercedes-Benz S320 Questions and Answers
My battery died a week ago .Since then,my radio won't work .I have been asked for a code.What should I do?
mcfire1, 1997 Mercedes-Benz S320, Bakersfield, CA
I know there are special little tools to remove the stereo from the console. Although at my repair shop they do it without them. I can't remember any sequence other than possibly a screw driver. An...
TYTRYD1, 1997 Mercedes-Benz S320, Galt, CA
I washed off the engine (cold) with the garden hose after replacing the brake pads and now it runs rough and the "check engine" light is on. I dried all electrical connections including r...
romy, 1997 Mercedes-Benz S320, San Francisco, CA
how many bolts to take out, how to take the brake pads out how to put the brake pads back in
romy, 1997 Mercedes-Benz S320, San Francisco, CA
i took out three bolts and tried to pull up the caliper to take the pads out but i cant move the brake caliper up i want to know if theres more bolts to take out thank you
MacAttack, 1997 Mercedes-Benz S320, Atlanta, GA
Where is blower motor and regulator located and how do you access it?
Jerbob, 1999 Mercedes-Benz S320, Wilsonville, OR
What is cost to replace transmission with remanufactured transmission?
Cost to have it overhauled?
Many thanks.
What type of power steering pump fits this Car
I live in Qatar , at summer the wether heat reach up to 47 degree , befor my car heat was suitable , but now heat start to reach 120 at the car pointer , I have to close the A/C to avoid damage , w...
3693, 1997 Mercedes-Benz S320, Atlanta, GA
My blower has stopped working on my car. It will not
blow air conditioning or heat . Is the problem the
heater blower? How much
c.duncan, 1995 Mercedes-Benz S320, Martinez, CA
W#hat is the recomended transmission fluid to use.
radiojoe, 1995 Mercedes-Benz S320, Pollocksville, NC
My car keeps blowing ignition coils, runs rough, and lacks power. My mechanic told me that it's my ECM. I've gone online and seen that there are 2 computers. Which one should I replace?
I have a 1995 S320 MB that I need instructions to take the wood face cover off the center console so that I can replace the heater controls.
Thanks
Ken
bumaye, 1997 Mercedes-Benz S320, Buffalo, NY
i need estimation for replacing a front bumper for 1997 S320
tonga, 1995 Mercedes-Benz S320, Moca, PR
fuel pump always cuts off and check out by bypassing relay and car still starts.but the voltage feed wire to the relay shuts off,I suspect from the computer.After few hours vehicle start up again.T...
bimmer124, 1997 Mercedes-Benz S320, Liverpool, NY
I have yet to find a repair book like Clymers or Chilton for this vehicle...only cds. Where is the oil filter as I would like to change it?
Anonymous, 1994 Mercedes-Benz S320, West Covina, CA
I am trying to replace my spark plugs but the Ignition Coil Boot is stuck. How do i remove it?
Mercedes-Benz S320 Car Reviews (2)
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S320 is my favorite car. I find it to be the most suitable for me.
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Overall I am impressed with the total package.The fit and finish as well as performance and fuel mileage is very good. That inline six (104) really shows it's muscle with a heavy car such as this. Plenty of leg and head room too!(but that radio "code" thing has to go!!)
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Mercedes-Benz S320 Problems
| Brakes |
- Due to the size and materials of the brakes on these vehicles, the brakes start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).
- Brake fluid should be flushed every two years to prevent premature anti-lock brake system (ABS) failure.
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| Engine |
- Oil leaks develop from the head gasket and timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix.
- Radiators break due to degradation of the plastic tanks and fittings.
- Older vehicles should have the cooling system serviced even if the mileage is low. The hoses can look good on the
outside, but the rubber can degrade and erode on the inside. If not
carefully checked, the hoses can burst at any time.
- The water pump can develop leaks. When replacing the water pump, the drive belt tensioner should be inspected and most likely replaced as well.
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| Exhaust & Emissions |
- A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since
this sensor measures the actual amount of air entering the motor, when
it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.
- Failed ignition coil packs or spark plug resistors can cause a rough running motor or lack of power.
- Emissions air injection pumps can seize up, causing a loud squealing
noise possibly followed by smoke. The air pump pulley stops turning,
but the drive belt does not and this friction causes the noise and smoke. If the engine is
not turned off, the belt will snap, turning on the alternator/battery
warning light.
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| Suspension & Steering |
- Irregular and premature tire wear can be caused by the lower control
arm bushings cracking and causing excessive movement at the control arm pivot point. Ball joints can also wear out prematurely, causing similar tire wear symptoms.
- The tie rod ends, drag link, and idler arm in the linkage of the steering system can wear out.
- There is a steering dampening shock that will leak fluid when it goes bad.
- Vehicles with level control that ride harshly in the rear (no give in
the suspension, like you are riding on a brick) may have bad dampening
actuators. The actuators should be replaced in pairs.
- Some models have tandem hydraulic pumps—one section for power
steering and the other for suspension adjustment. These pumps are prone
to leakage from either section.
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| Drive Train |
- A vibration felt through the center floor
of
the vehicle can be caused by driveshaft flex discs, which crack and
shred, causing excessive driveshaft movement. Not repairing these can
cause damage to the driveshaft center support bearing, or, in the worst
case
scenario, damage to the transmission or differential.
- High mileage vehicles can leak from the transmission oil seals.
- High mileage or older vehicles develop leaks
at the differential seals and cover; the whole unit needs to be
resealed to repair the leaks.
- The bushings for the shifter lever wear out to the point where they
break and fall out. This causes excessive movement (loose feel) in the
shifter lever and a clanging-type noise when changing gears.
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| Electrical & Lights |
- The insulation degrades on the engine wiring harnesses because the
insulating material falls off of the wires and leaves the conductors
exposed. This can cause many problems depending on which wires are
exposed and what they touch.
- Throttle valves can suffer electrical failure.
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| Heating & Air Conditioning |
- Other than a defective motor, a bad switch or blower motor resistor assembly can cause inoperative heater blower motors.
- Leaks at the AC compressor, hose manifold for the compressor, or the evaporator core can cause poor AC performance.
- The climate control system can fail or perform erratically due to internal wear in the climate control unit buttons.
- A cracked or broken heater core outlet housing can cause a coolant leak near the bulkhead (firewall).
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Mercedes-Benz S320 Recalls and TSBs
Mercedes-Benz S320 Recalls (Recent)
Campaign Number: 96V058000
Number of Vehicles Affected: 149
Model Years Affected:
1996
Date Owner Notified: 04/1996
Defect Summary: THE DRIVE BELT PULLEY ON THE ENGINE CAN DEVELOP FATIGUE CRACKS IN THE METAL AND BREAK. IF THE DRIVE PULLEY BREAKS, THE CAR WOULD NOT HAVE ENGINE COOLING, BATTERY CHARGING, AND/OR POWER STEERING.
Consequence Summary: LOSS OF THESE SYSTEMS CAN CAUSE THE CAR TO OVER HEAT, LOSE POWER FROM THE BATTERY, AND LOSS OF CONTROL OF THE CAR INCREASING THE POTENTIAL FOR A VEHICLE ACCIDENT.
Corrective Summary: DEALERS WILL REPLACE THE ENGINE CRANKSHAFT DAMPER-PULLEY ON THESE VEHICLES.
Recall Notes: SYSTEM: ENGINE; PULLEY; CRANKSHAFT.VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH 6-CYLINDER ENGINES. NOTE: OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME, SHOULD CONTACT MERCEDES-BENZ AT 1-800-367-6372. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.
Mercedes-Benz S320 Technical Service Bulletins (Recent)
None reported.
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