Melanie Reiff
Updated on Aug 11, 2022
A timing belt replacement service restores control of the opening and closing of the engine’s intake and exhaust valves. It synchronizes the valves with the movement and position of the engine pistons so that the engine can function properly. You’ll need a timing belt replacement service if the belt is damaged or snapped.
If a worn timing belt were to snap while you’re driving, you can lose engine power immediately and risk getting in a collision. To ensure your car is safe, the car insurance broker app Jerry has compiled what you need to know about replacing your timing belt.
The exact cost varies between different Mercedes-benz models. For example, newer vehicle models are usually made with more expensive materials, so recent or high-end models will cost more, especially if your service requires a part replacement. Use the table below to estimate the cost for your own vehicle.

What is a timing belt replacement?

When getting a timing belt replacement service, the mechanic will assess the belt condition to confirm that a replacement is needed. The engine needs the timing belt to operate, as it connects the crankshaft to the camshaft and controls the pistons and valve movement.
The timing belt ensures that the opening and closing of the valves are precisely synchronized. When the crankshaft turns, the timing belt will turn the camshaft. This allows the pistons to move up and down so that air and fuel can move through the engine correctly.
If the timing belt snaps, the engine will not be able to draw air or fuel in to operate and the power will cut off completely.

How to replace a timing belt

Changing the timing belt can vary depending on the engine design, but the mechanic will follow these general steps:
  • Disconnect the battery ground cable and let it cool
  • Set the crankshaft to top dead center and number one piston on the compression stroke, remove the crankshaft pulley
  • Remove accessories block timing belt covers
  • Remove timing belt covers and lock camshafts as required
  • Removing timing belt tensioner, idler pulleys, timing belt
  • Installing a new timing belt requires following the above steps in reverse order—the camshaft and crankshaft need to be in perfect alignment after the tensioner is set
  • After installation, turn the engine crankshaft by hand 720 degrees
  • Confirm timing marks on crankshaft and camshafts are in the correct position
  • Road test vehicle to confirm normal operation
  • Affix service sticker to the engine with the date of belt replacement and vehicle mileage

When do I need to replace my timing belt?

If your engine stops abruptly or will not start, it’s time to replace your timing belt.
Other signs to look out for that may indicate a broken timing belt include:
  • Rough engine operation—indicates the teeth have worn out and this causes the belt to jump
  • Banging or clanking engine noises—can indicate that the belt jumped and the pistons and valves are colliding, causing damage to the engine
A broken belt poses a great risk to you and cars around you, as the engine power will cut off completely and almost immediately. This is extremely dangerous if it happens suddenly and can cause an accident.
It is recommended that you have the timing belt condition inspected every 60,000 to 90,000 miles. This allows the mechanic to monitor when the belt should be changed to prevent your belt from suddenly breaking.

How to find affordable car insurance

Finding the right insurance that covers your car maintenance is a breeze when you use the car insurance broker app, Jerry.
With this super app, you’ll be able to compare customized quotes from over 50 top insurance carriers and pick the one that best suits you. Jerry will then help you handle all the paperwork and cancellations so that you won’t have to worry about it.
The best part? Jerry specializes in finding savings across insurance carriers so the average Jerry user can save $879 a year on car insurance premiums!
Keep in mind that your location is another factor that determines the final cost of repairs. Areas with higher cost of living will usually have more expensive car repair services, especially if there’s less local competition. Check out the table below for an estimate of what Mercedes-benz drivers pay in different cities.
Jerry doesn’t just offer fair price repair estimates for Mercedes-benz drivers! Our team of writers has collected everything you need to know for every car. Here’s how much the repair costs for some popular cars:
CarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration
Custom 500
The cost of repairs might vary depending on which Mercedes-benz you drive, but there’s an easy way to save money for the services you need! Just download the Jerry app for help lowering your insurance premiums. In less than 45 seconds, Jerry collects all of your information from your existing insurer. Choose from competitive quotes from top insurance companies and Jerry takes care of the rest—securing your new policy and helping you cancel your old one upon request.
With an average annual savings of $887, Jerry can help you free up funds for the repairs your Mercedes-benz’s needs.