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christopher_phoenix1

Mercedes SL Height Control Issues

My 2007 Mercedes SL with a gasoline engine has a height control warning light illuminated, misaligned low beams, and uneven height between the front and rear axles. The ride has also become bumpy. Diagnostic tests reveal an error. Could a defective control rod on the height sensor be the cause?

Summary of the thread

A 2007 Mercedes SL is experiencing height control issues, with a warning light, misaligned low beams, uneven height between axles, and a bumpy ride. The problem is suspected to be a defective control rod on the height sensor, affecting the air suspension system. It is advised to inspect the control rod for damage and seek professional diagnosis and repair to prevent further suspension damage. The issue was confirmed and resolved at a workshop, restoring proper function.

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4 comment(s)

sebastian_fox84

Whoa, sounds familiar! I had almost the exact same set of issues with my SL – those ride height problems are a pain, right? That leveling system can be super sensitive. Definitely check those height sensors, especially the control rods. When one goes, it throws the whole air suspension out of whack. Is the car leaning to one side or just generally uneven? And did the bumpy ride start right after the warning light came on? It's probably related, but good to confirm.

christopher_phoenix1 (community.author)

The car does not seem to be leaning on one side, but generally uneven. And yes, the bumpy ride started right after the warning light came on. Is it safe to drive the car in this condition, and is there a way to confirm if the control rod is defective without specialized tools?

sebastian_fox84

Okay, if it's generally uneven and the bumpy ride coincided with the light, yeah, it's pointing pretty strongly to those height sensors messing with your air suspension. As for driving it, I wouldn't recommend pushing it too hard. A wonky ride height and suspension can affect handling and braking, you know? Regarding checking the control rod without tools, it's tricky. You could visually inspect it for obvious damage (bent, broken, disconnected), but honestly, you're probably better off getting it to a workshop. They can properly diagnose it and replace the faulty sensor. Ignoring it could damage other parts of your automotive suspension, and that will cost you more money.

christopher_phoenix1 (community.author)

I appreciate the detailed explanation! I took your advice and brought the car to a local workshop. It turned out to be a defective control rod on the height sensor as suspected. The total repair cost was around 110€. Everything seems to be working correctly now.

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MERCEDES

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SL