Why GLK CLASS TPMS Fitment Matters
The GLK CLASS (Mercedes-Benz GLK-Class) was produced from 2008 to 2015 in two distinct generations: the X204 pre-facelift (2008–2012) and the facelift (2013–2015). While both use a tire pressure monitoring system, the sensor frequency and programming method changed after 2011. Installing the wrong sensor means the TPMS light stays on—or worse, the system fails to alert you to a low tire.
Most aftermarket TPMS sensors for the GLK CLASS operate at 433MHz. The BH-Sens BL-ST-048 is one such sensor, pre-programmed and cloned from OE part numbers 13530661, 13533166, and 13538565. But compatibility depends on more than just the frequency.
GLK CLASS TPMS Sensor Compatibility Table
| GLK CLASS Model Year | TPMS Frequency | Compatible OE Numbers | Works with BL-ST-048? |
|---|---|---|---|
| 2008–2011 | 315MHz | 13590565, 13590566 | No (wrong frequency) |
| 2012–2015 | 433MHz | 13530661, 13533166, 13538565, 13538566, 13538761, 13549707 | Yes (direct fit) |
Note: Some 2012 models were produced with 315MHz sensors during the transition year. Always verify using the method below.
How to Verify Fitment Before Buying
1. Check the FCC ID on Your Current Sensor
The safest way to confirm compatibility is to look at your existing sensor. Remove the tire and valve stem (or use a shop’s tire machine). On the metal body of the sensor, you’ll find an FCC ID stamped into the metal.
- If the FCC ID starts with MRX or GQ4, your GLK CLASS uses 315MHz sensors. The BL-ST-048 will not work.
- If the FCC ID starts with HYQ or PAX, your GLK CLASS uses 433MHz sensors. The BL-ST-048 is a direct replacement.
2. Read the Sensor ID with a TPMS Tool
If you cannot remove the tire, use a TPMS diagnostic tool (such as the Autel TS508 or Bartec Tech400). Place the tool near the valve stem and scan. The tool will display the sensor ID, frequency, and manufacturer. If it shows 433MHz and an OE number matching 13530661, 13533166, or 13538565, you can safely purchase the BL-ST-048.
3. Check Your Vehicle’s Build Date
The GLK CLASS switched from 315MHz to 433MHz sensors for the 2012 model year, but production changeovers happened mid-year. Look at the driver’s door jamb sticker for the build month and year. Vehicles built after June 2011 are more likely to use 433MHz sensors.
4. Verify the Tire Pressure Placard
Open your driver’s door and find the tire pressure placard. If it lists pressure in psi (not bar) and the placard has a small TPMS logo, your vehicle likely uses the 433MHz system. If the placard only shows bar readings, it may still be the older system—but this is not a definitive test.
What the BH-Sens BL-ST-048 Covers
The BL-ST-048 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Buick, Cadillac, Chevrolet, Nevo | OE# 13530661, 13533166, 13538565 is a pre-programmed, clone-ready TPMS sensor that works with the following GLK CLASS years and systems:
- Direct fit: 2012–2015 GLK CLASS (433MHz systems only)
- Clone compatibility: Can be programmed to match your existing sensor ID using a TPMS cloning tool (such as the Autel MX-Sensor or Bartec)
- OE cross-reference: 13530661, 13533166, 13538565, 13538566, 13538761, 13549707
This sensor is not compatible with 2008–2011 GLK CLASS models that use 315MHz sensors. If you have an older GLK CLASS, you need a 315MHz sensor like the BH-Sens BL-ST-030 or equivalent.
Step-by-Step Installation Tips
- Remove the tire using a tire machine. Do not attempt to force the sensor out by hand.
- Torque the valve stem nut to 4 Nm (35 in-lbs). Overtightening can crack the sensor body.
- Relearn the sensor IDs using a TPMS relearn tool or your vehicle’s dashboard procedure. For the GLK CLASS, the relearn procedure is:
- Turn the ignition to ON (do not start).
- Press the TPMS reset button (located under the steering wheel or in the glove box) until the TPMS light blinks twice.
- Start the vehicle and drive above 15 mph for 10 minutes. The system will automatically learn the new sensor IDs.
Recommended Part
For 2012–2015 GLK CLASS owners, the BL-ST-048 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Buick, Cadillac, Chevrolet, Nevo | OE# 13530661, 13533166, 13538565 is a reliable, pre-programmed replacement that matches OE specifications. It comes ready to install after cloning your original sensor ID.
FAQ
Will the BL-ST-048 work on my 2010 GLK CLASS?
No. The 2010 GLK CLASS uses a 315MHz TPMS system. The BL-ST-048 operates at 433MHz and is not electrically compatible. You need a 315MHz sensor such as the BH-Sens BL-ST-030.
Can I use this sensor on a 2013 GLK CLASS without a cloning tool?
Yes, but only if you have the original sensor IDs. The BL-ST-048 ships pre-programmed with a default ID. To match your vehicle’s existing sensor IDs, you must use a TPMS cloning tool (available at most tire shops) to copy the IDs from your old sensors to the new ones. Without cloning, the TPMS light will stay on until the system is relearned.
How do I know if my GLK CLASS has 315MHz or 433MHz sensors without removing the tire?
Use a TPMS diagnostic tool (like the Autel TS508) to scan the sensor through the tire sidewall. Most tools will display the frequency, manufacturer, and sensor ID without removing the tire. Alternatively, check the build date on your door jamb—vehicles built before June 2011 are almost always 315MHz.
Is the BL-ST-048 compatible with Mercedes-Benz GLK CLASS models sold outside the US?
Yes, but only for 433MHz systems. European and Asian market GLK CLASS models often use the same 433MHz frequency as US models from 2012 onward. However, some markets used 315MHz sensors through 2013. Always scan your existing sensor to confirm the frequency before purchasing.