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S500

There are two common items that can cause an intermittent no start with this car. You already replaced the crank sensor, which is one of them. The other can be the key, and/or the Electronic Ignition Switch (EIS). If you...

Diagnosing this issue requires the Factory Service Manual and the wiring diagram at minimum. If the turn signal circuit is not working when the vehicle is on, and it is wired through this DCM, that circuit is simple enough that...

Hello - your Mercedes transmission is in "limp mode (https://www.yourmechanic.com/question/car-stuck-in-limp-mode)". Something has failed in the transmission, and it has engaged 2nd gear as a limited means of getting you to a repair shop. If you could forward the specific codes...

Hi there. The time for removing and replacing a control arm on a 2000 Mercedes-Benz S500 ranges between 4 to 6 hours depending on the persons experience and if the parts come off easy or not. If you need further...

Hello. There are a few problems that can cause this. If there is the correct fuel pressure and if there is compression, then the sensors need to be checked with a scan tool to see if any of them are...

For this issue I would first recommend having your transmission inspected by a certified professional. There are a number of things including faulty shift solenoids (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-shift-interlock-solenoid), low fluid level, or catastrophic damage that could be causing your transmission to have...

Since you said your Check Engine Light (https://www.yourmechanic.com/article/what-does-the-check-engine-warning-light-mean) is on, the first thing I would recommend doing would be to have a qualified professional use an OBD2 scanner to pull the trouble code that is produced when your Check Engine...

If your car is overheating, smelling like coolant, and always in need of coolant, then those are signs that you may have a coolant leak somewhere. The smoke you are seeing may be antifreeze leaking out onto hot parts of...

Hello. It sounds like the weather stripping on the driver's side door is worn out or missing and would need to be replaced. The soft touch pad needs to be replaced as well. I would have the door inspected by...

The transmission control module (TCM) takes inputs from numerous sensors. It then uses this information to control various transmission related outputs such as shift solenoids and the torque converter clutch. The TCM will go into limp mode when it loses...

I would suggest checking the Kelly Blue Book website with specifics related to your zip code as market prices of cars vary by zip code. This will give you a baseline for determining whether or not the car is within...

Hello - I would first check for problem codes, whether the Check Engine light is illuminated or not. And, if the engine is not really overheating, the problem is most likely the engine temperature sensor (https://www.yourmechanic.com/article/3-essential-things-to-know-about-your-car-s-temperature-gauge) (the sensor for the...

Hello. There are 2 devices in the front wiring of your vehicle called "Signal Acquisition Modules." One is for the left side of the front, the other is for the right. They act as an electrical "router" and power distribution...

The shifter knob shift mechanism (https://www.yourmechanic.com/services/shifter-interlock-solenoid-replacement) may be loosing contact and needs to be replaced. The switch will need to be tested and monitored using the Mercedes scanner. If the switch gives erratic readings when scanned and while the switch...

It is possible that you could have one of two issues. You could be experiencing a bad alternator (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-alternator) problem that is causing your battery to be drained and become faulty well before it should be. In this case, I...

If your head gasket has gone bad, stop driving the vehicle as soon as possible. A head gasket replacement does require removal of multiple engine parts to replace and is usually a costly repair. This is why many people decide...

Improper air metering or fueling can hinder engine performance. A clogged fuel filter can offer enough fuel for an engine to start, but lack in enough volume for higher loads. Have an experienced technician look over the vehicle fueling and...