Why Fitment Matters for S Class TPMS Sensors
Mercedes-Benz S Class vehicles are equipped with direct TPMS sensors mounted inside each wheel. These sensors transmit tire pressure and temperature data to the vehicle’s ECU. Using the wrong frequency or incompatible protocol can trigger a constant warning light, or worse—no reading at all. The RDE036V21 operates at 433MHz, which is common in European-market S Class models but not universal.
S Class TPMS Sensor Frequency by Generation
| S Class Generation | Model Years | Common TPMS Frequency | Notes |
|---|---|---|---|
| W220 | 2000–2005 | 315MHz (US) | Rarely compatible with 433MHz sensors |
| W221 | 2006–2013 | 315MHz (US) / 433MHz (EU) | Verify frequency per VIN |
| W222 | 2014–2020 | 433MHz (most markets) | Known to accept 433MHz sensors |
| W223 | 2021+ | 433MHz (global) | Typically 433MHz, but confirm |
The RDE036V21 is designed for 433MHz systems, so it will work on late-model W222 and W223 S Class vehicles in most regions. For earlier models, especially US-market W221s, you may need a 315MHz sensor.
How to Verify Fitment Before Buying
- Check the OE part number on your current sensor. The RDE036V21 cross-references to OE numbers like 0045400217, 05154876AA, and 407005DA0C. If your sensor has one of these numbers stamped on it, the sensor is likely a direct replacement.
- Look at the frequency label. Every TPMS sensor has a frequency marking (315MHz or 433MHz). If yours says 433MHz, the RDE036V21 is a match.
- Use a TPMS scan tool. A shop can read the sensor ID and frequency from your vehicle without removing the tire. This is the most reliable method.
- Check your owner’s manual or glovebox sticker. Some S Class models list the TPMS frequency in the technical specifications.
Other Brands the RDE036V21 Fits
This sensor is not S Class–exclusive. It also fits Alfa Romeo, Aston Martin, BAIC, Chrysler, Dodge, and eight other brands. The key takeaway: compatibility is driven by frequency and OE number, not just the vehicle badge.
Recommended Part
For a direct-fit 433MHz replacement on compatible S Class models, the RDE036V21 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Alfa Romeo, Aston Martin, BAIC, Chrysler, Dodge & 8 More | OE# 0045400217, 05154876AA, 407005DA0C is a solid choice. It’s manufactured by BH-Sens (Baolong Technology), a Tier 1 OE supplier, so you get factory-level quality at an aftermarket price.
FAQ
Will the RDE036V21 work on a 2010 S Class W221?
It depends on the market. US-market 2010 W221 models typically use 315MHz sensors, so a 433MHz sensor like the RDE036V21 will not work. Check your existing sensor frequency first.
Can I install the sensor myself?
Yes, if you have a tire mounting machine and a relearn tool. The sensor must be programmed to your vehicle after installation. Some auto parts stores offer free relearn service.
How do I know if my S Class uses 315MHz or 433MHz?
Look for a sticker inside the driver’s door jamb or check the original sensor. If the OE number matches one of the RDE036V21 cross-references (e.g., 0045400217), it’s 433MHz. Otherwise, use a TPMS scan tool to confirm.
Is BH-Sens a reliable brand?
Yes. BH-Sens is a brand of Baolong Technology, which supplies TPMS sensors to several global automakers. They meet OE standards for accuracy and durability.