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Mercedes-Benz GLC X253 (2015-2023) transmission shudder during acceleration - Mercedes-Benz C-Class
Home/Cars/Mercedes-Benz/C-Class/W205 (2014-2021)/Mercedes-Benz GLC X253 (2015-2023) transmission shudder during acceleration

Mercedes-Benz GLC X253 (2015-2023) transmission shudder during acceleration

Mercedes-Benz C-Class W205 (2014-2021)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSolution
ProblemSolution
4 min read
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Problem Statement

# Mercedes-Benz GLC X253 (2015-2023) Transmission Shudder During Acceleration

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Additional Information

Difficulty
medium
Severity
medium

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Mercedes-Benz GLC X253 (2015-2023) Transmission Shudder During Acceleration

Symptoms
  • Noticeable shudder or vibration during acceleration, especially from a stop or low speeds.
  • Possible jerking sensation when shifting gears.
  • Increased engine RPMs without corresponding vehicle speed increase.
  • Check Engine Light may or may not be illuminated.
Diagnostic Steps

  1. Visual Inspection

    • Check under the vehicle for any fluid leaks (transmission fluid or engine oil).
    • Inspect the transmission mounts for any signs of wear or damage.
    • Look for any obvious signs of damage on the driveshaft and CV joints.

  2. Check Transmission Fluid

    • Ensure the transmission fluid is at the correct level and is in good condition (not burnt or contaminated).
    • Tools Required: Transmission dipstick (if applicable) and a clean rag.

  3. Scan for Diagnostic Trouble Codes (DTCs)

    • Use an OBD-II scanner to check for any stored codes related to the transmission or engine.
    • Note any codes that may indicate a transmission fault.

  4. Check for Software Updates

    • Ensure the vehicle's transmission control module (TCM) is updated with the latest software by consulting with a Mercedes-Benz dealer.

  5. Test Drive

    • Perform a test drive to replicate the issue. Pay attention to conditions that trigger the shudder (e.g., cold start, hot engine, different speeds).
Tools Required
  • OBD-II scanner
  • Torque wrench
  • Transmission fluid pump
  • Fluid catch pan
  • Socket set and wrenches
  • Screwdrivers
  • Transmission fluid (Mercedes-Benz approved)
  • Clean rags
  • Jack and jack stands
Repair Instructions
Step 1: Check and Change Transmission Fluid

  1. Locate Transmission Fluid Dipstick or Drain Plug

    • For models with a dipstick, locate it under the hood. For others, you may need to access the drain plug.

  2. Check Fluid Level

    • Pull the dipstick, wipe it clean, reinsert, and check the level.
    • If you have a drain plug, use a socket wrench to loosen it and check fluid condition.

  3. Change the Fluid (if necessary)

    • If the fluid is low or dirty, replace it.
    • With the vehicle level, place a fluid catch pan under the transmission.
    • Remove the drain plug, allow fluid to drain completely, and replace the plug.
    • Use a transmission fluid pump to refill the transmission with new, approved fluid through the dipstick tube or fill port.
    • Check the fluid level again after refilling and adjust as necessary.
Step 2: Inspect and Replace Transmission Mounts (if necessary)

  1. Lift the Vehicle

    • Use a jack and jack stands to safely raise the vehicle.

  2. Inspect Transmission Mounts

    • Look for signs of wear, cracks, or separation on the rubber parts of the mounts.
    • Use a pry bar to check for excessive movement.

  3. Replace Mounts

    • If damaged, remove the bolts securing the mount to the transmission and the chassis.
    • Install the new mount, and torque the bolts to the manufacturer's specifications.
Step 3: Check for Software Updates
  1. Contact a Dealership
    • Schedule an appointment with a Mercedes-Benz dealership to check for TCM software updates.
    • Have them perform the updates if necessary.
Step 4: Re-Test Drive
  1. After Repairs
    • Perform a test drive to ensure the shudder during acceleration has been resolved.
    • Monitor for any abnormal behavior and check again for DTCs using the OBD-II scanner.
Step 5: Additional Diagnostic Steps (if issues persist)
  • If the issue persists after fluid change and mount inspection, further diagnostics may be required:
    • Inspect the torque converter for malfunction.
    • Evaluate the condition of the driveshaft and CV joints.
    • Check the transmission control solenoids for proper operation.
Conclusion

Following these steps should help diagnose and resolve transmission shudder issues in a Mercedes-Benz GLC X253. If problems persist after these repairs, consider consulting a professional technician for further evaluation, as internal transmission components may need inspection or replacement.