Q: Starter D pin is loose. Is there a way to tighten it?

Hi. Other ML320 owners have reported similar symptoms. Although it is a rare occurrence, it is something that should be repaired. Replacing the yaw sensor does fix the issue, so it is most likely the culprit, especially if there is...

This sounds like you either have bulbs that are going bad, or the more likely cause is a poor connection inside on the bulb socket. Have the light that is tapped removed and check each connection for loose pins or...

Hello! From the pictures I've seen it seems like the drain plugs for the engine oil and the transmission fluid could be mixed up if not careful. Make sure the right fluid was changed by checking the level of the...

Hi there. The engineers that design vehicles do so by making sure each part is precisely sized to match others - so the vehicle operates safe and efficiently. This includes the wheel and tire overall width and circumference (https://www.yourmechanic.com/article/how-to-tell-the-difference-in-size-for-a-car-tire-by-jason-unrau). What...

There is an electrical short somewhere. The fastest way is to have a specialist diagnose the vehicle and trace the issue. Short of that, start removing one fuse at a time to check. Reinstall each fuse when you come back...

Hello. This is caused by a loss of voltage someplace in the electrical system. Most of the time this is caused by a bad connection at the battery or a bad battery cable (https://www.yourmechanic.com/services/battery-cable-replacement). I usually check and clean these...

Hi there. One of the most common issues with early 90's diesel engines (https://www.yourmechanic.com/article/how-does-a-diesel-engine-work-by-jason-unrau) are the fuel injection pump's o-ring (https://www.yourmechanic.com/services/fuel-injector-o-rings-replacement) can dry out or crack overtime causing fuel pressure and delivery issues. Although it's possible to rebuild the fuel...

The situation you are describing sounds like it is probably coming from the throwout bearing on the clutch. These bearing are considered "sealed" units, that don't have provisions for maintenance. Over time, the bearing will accumulate debris, and the lubricant...

Hello - most likely, your hard starting is caused by a malfunctioning fuel pressure check valve (https://www.yourmechanic.com/question/car-takes-multiple-tries-to-start-when-cold-fine-when-warm-new-battery-dlr-says-check-valve-on-fuel-pump-assembly-needs-entire-assembly-by-scott-f), or fuel pressure regulator. The fuel system is supposed to hold a small amount of residual pressure in the system for faster starts....