🔧 GLC300 - Outer Tie Rod End Replacement

The outer tie rod end connects your steering rack to the steering knuckle, and it’s a common wear item that can cause loose steering, clunking, and uneven tire wear. The key to a smooth DIY is separating the ball joint safely and keeping the toe setting close by counting turns—then getting a proper alignment afterward.

Difficulty Level: Intermediate | Estimated Time: 1.5-3 hours

Assumption: Torque values below match common X253/W205 steering hardware; if your fasteners differ, follow the torque spec supplied with the part/service data.

---

⚠️ Safety & Precautions

• 🛑 Support your A4WD safely: use jack stands; never rely on a jack.
• 🛑 Keep hands clear when separating the joint; it can “pop” loose suddenly.
• 🛑 Don’t spin the steering wheel with the tie rod disconnected.
• 🛑 If you use a pickle fork (wedge tool), it can tear the rubber boot.
• 🛑 No battery disconnect is required for this repair.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 17mm socket
• 1/2" drive breaker bar
• 1/2" drive torque wrench (20–200 Nm range)
• Open-end wrench set (18mm–27mm)
• 21mm socket
• 24mm open-end wrench
• Needle-nose pliers
• Ball joint separator/puller (specialty)
• Pickle fork separator (specialty)
• Hammer (16 oz)
• Penetrating oil
• Paint marker
• Tape measure
• Safety glasses
• Mechanic gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Outer tie rod end - Qty: 1
• New self-locking nut for tie rod end stud - Qty: 1
• Jam nut (tie rod lock nut) (if supplied/required) - Qty: 1
• Anti-seize compound - Qty: 1

---

📋 Before You Begin

• Park on level ground, steering wheel straight, and set the parking brake.
• Place wheel chocks behind the rear tires.
• Crack the front wheel lug bolts loose with a 17mm socket and breaker bar before lifting.
• Measure and note your current toe reference: use a tape measure to measure between the front edges of the front tires (left-to-right) at the same height, then the rear edges. Write it down.
• Spray penetrating oil on the tie rod jam nut and the tie rod end threads; let it soak 5–10 minutes.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and remove the wheel

• Lift the front corner with a floor jack (rated 3-ton minimum) at the factory jacking point.
• Set the vehicle onto jack stands (rated 3-ton minimum).
• Remove the wheel using a 17mm socket.

Step 2: Mark the tie rod end position (helps preserve alignment)

• Use a paint marker to mark the tie rod end and the threaded tie rod so you can re-install close to the original position.
• Use a 24mm open-end wrench (typical) to hold the jam nut, and a second open-end wrench set (18mm–27mm) to steady the tie rod end body if needed.
• Break the jam nut loose about 1/2–1 turn (do not move it far yet).
• Tip: A little movement now prevents seized threads later.

Step 3: Remove the tie rod end nut at the steering knuckle

• Locate the tie rod end stud where it goes into the steering knuckle.
• Remove the nut using a 21mm socket and breaker bar (size may vary slightly by hardware).

Step 4: Separate the tie rod end from the knuckle

• Preferred method (protects the rubber boot): install a ball joint separator/puller (specialty) and tighten it until the stud pops free.
• Alternate method: use a pickle fork separator (specialty) and hammer (16 oz) to drive it in until the joint separates. Tip: This can damage the boot.
• Once separated, swing the tie rod end away from the knuckle.

Step 5: Remove the old tie rod end (count the turns)

• Spin the jam nut back slightly using a 24mm open-end wrench to create space.
• Unscrew the tie rod end from the inner tie rod by hand, counting full turns carefully (example: 16.5 turns). Write the number down.

Step 6: Install the new tie rod end

• Apply a light coat of anti-seize compound to the threads (avoid getting any on the stud taper).
• Screw the new tie rod end on the exact same number of turns you counted.
• Line up the stud with the steering knuckle and push it into place.

Step 7: Tighten fasteners to spec

• Install the new self-locking nut on the stud and tighten with a torque wrench and 21mm socket: Torque to 55 Nm (41 ft-lbs).
• Hold the tie rod end body with an open-end wrench set (18mm–27mm) as needed and tighten the jam nut using a 24mm open-end wrench: Torque to 80 Nm (59 ft-lbs).
• Tip: The jam nut is what locks alignment.

Step 8: Reinstall the wheel

• Reinstall the wheel and hand-thread the lug bolts.
• Lower the vehicle with the floor jack (rated 3-ton minimum).
• Tighten lug bolts in a star pattern using a torque wrench and 17mm socket: Torque to 130 Nm (96 ft-lbs).

---

✅ After Repair

• Turn the steering wheel lock-to-lock slowly while parked to confirm nothing binds and the boot isn’t twisted.
• Road test at low speed first; confirm the steering wheel is close to centered and there are no clunks.
• Get a 4-wheel alignment as soon as possible (recommended immediately). Counting turns gets you close, not perfect.
• Recheck the jam nut area after a short drive for any looseness.

---

💰 DIY vs Shop Cost

Shop Cost: $250-$550 (parts + labor + alignment)

DIY Cost: $50-$180 (parts only, alignment extra)

You Save: $100-$350 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.8 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.