Mercedes-Benz CL500 (1996-2006) Engine Crankshaft Position Sensor Guide
Solve stalling and no-start problems by understanding this critical sensor in your CL500.
- The most common symptom is the engine stalling when hot and not restarting until it cools down.
- Choose an OEM supplier brand like Bosch or Hella for the best reliability; avoid cheap, generic brands.
- The sensor is located on the driver's side rear of the engine and is held by a single E8 Torx bolt.
- This is a common failure item, but it is a relatively inexpensive and straightforward DIY repair.
Is Your CL500 Stalling or Refusing to Start? It Could Be the Crankshaft Sensor.
A faulty crankshaft position sensor is a very common issue on the 1996-2006 Mercedes-Benz CL500, particularly models from 2000-2006. The most classic symptom is the engine cutting out once it gets warm, and then refusing to restart until it has cooled down for 30 minutes or more. This can be a dangerous situation if it happens in traffic. Other signs include a check engine light, rough idling, engine misfires, and difficulty starting the car even when cold.
Choosing the Right Aftermarket Sensor: Brand Matters
When replacing this sensor, the brand you choose is critical. While many parts look the same, their internal quality can vary significantly. Using a low-quality, generic sensor can lead to the same problems returning quickly. For a critical component like this, it's best to stick with proven brands.
OEM vs. Aftermarket Quality
For the M113 V8 engine in your CL500 🎬 Watch this overview of how these sensors function on M113 engines., Bosch is an Original Equipment Manufacturer (OEM). This means they supply the part directly to Mercedes-Benz. You can often buy the same Bosch sensor without the Mercedes-Benz logo for a fraction of the dealer price. Brands like Hella are also considered high-quality OEM suppliers and are a reliable choice. Cheaper, lesser-known brands are generally not recommended by experienced owners, as they have a higher failure rate.
Brand Quality Tiers for Your CL500
- Tier 1 (OEM Supplier): Bosch, Hella. These are your best choices for reliability and proper function, often identical to the dealer part.
- Tier 2 (Reputable Aftermarket): Delphi, Standard Ignition (SMP), Beck Arnley. These brands generally offer good quality and are a solid alternative if an OEM supplier isn't available.
- Tier 3 (Budget): Facet, Vemo, Dorman, and other store brands. Use with caution. While the price is low, forum discussions often contain stories of these parts failing prematurely, sometimes right out of the box.
How Much Does a New Crankshaft Position Sensor Cost?
The cost of the part itself is relatively low, but labor can add to the total if you have a shop perform the work. Given the low part cost, investing in a quality brand is a smart decision.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Your Price Range) | $26.49 - $84.07 |
| New OEM (Dealer) | $150 - $220 |
| Shop Labor | $100 - $200 |
A Note on Metal vs. Plastic Sensors
Some earlier replacement sensors from Bosch had a metal body which could corrode and seize inside the aluminum engine block bracket, making future removal extremely difficult. Newer Bosch and other quality sensors often have a plastic housing to prevent this. If you do use a metal-bodied sensor, applying a thin coat of anti-seize compound to the body before installation is recommended.
Frequently Asked Questions (FAQ)
Where is the crankshaft position sensor located on the CL500?
The sensor is located on the driver's side of the engine, at the back, mounted to the bell housing where the engine meets the transmission. It's in a tight spot and can be difficult to see and reach from above. You will need to work by feel.
Can I replace this sensor myself?
Yes, this is a DIY-feasible job for someone with basic mechanical skills. 🎬 Follow this step-by-step guide to replace the sensor yourself. You will need an E8 external Torx socket, extensions, and a ratchet. The main challenges are the tight access and working by feel. It is critical to let the engine cool down completely before starting, as your hand will be near the hot engine block.
Will a bad crankshaft sensor always cause a Check Engine Light?
Not always. While a failing sensor often triggers the Check Engine Light with a code like P0335, it can sometimes fail intermittently without storing a code, making diagnosis tricky. The engine might just stall or fail to start with no warning light.
Are there any recalls for this part on my CL500?
No, there have been no specific recalls issued by the NHTSA for the crankshaft position sensor on the 1996-2006 Mercedes-Benz CL500. However, the failure of this part is a widely documented common issue.
Helpful Videos
Technical Specifications
OEM Part Numbers: 0031534928 0031535028
Requires one E8 external Torx bolt for installation. Located on the driver's side of the bell housing.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mercedes-Benz CL500:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your CL500 Stalling or Refusing to Start? It Could Be the Crankshaft Sensor.
- Choosing the Right Aftermarket Sensor: Brand Matters
- OEM vs. Aftermarket Quality
- Brand Quality Tiers for Your CL500
- How Much Does a New Crankshaft Position Sensor Cost?
- A Note on Metal vs. Plastic Sensors
- Frequently Asked Questions (FAQ)
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