Subaru BRZ ZC6 Model 2012-2020 Repair Manual

This manual contains detailed instructions for repair and maintenance of the Subaru BRZ (ZC6) 2012-2020. Includes information on the FA20 engine, transmission, electrical system, suspension and body. Also presented are diagnostic codes (DTC), wiring diagrams and troubleshooting tips. Useful for owners, mechanics and auto repair shops. 🚗🔧

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1️⃣ FA20 Engine – Oil Consumption

📌 Problem:

The FA20 engine is prone to increased oil consumption.

This is especially common on models before 2015.

🔧 Solution:

✔️ Use high-quality oil (5W-30 or 0W-20) and change it every 5,000-7,000 km.

✔️ Check the oil level regularly and top up if necessary.

✔️ Installing an improved oil catch can (Oil Catch Can) helps reduce deposits.

2️⃣ Connecting rods break during tuning

📌 Problem:

Stock engine connecting rods cannot withstand a significant increase in power (turbocharging, compressor).

If 350 hp is exceeded, the bearings may turn and the engine may be destroyed.

🔧 Solution:

✔️ When increasing power, replace connecting rods and pistons with forged ones.

✔️ Monitor fuel quality (not lower than 98th).

✔️ Do not exceed the safe speed limit (7000-7500 rpm).

3️⃣ Weak clutch on manual transmission

📌 Problem:

The standard clutch wears out faster with aggressive driving.

Especially when starting from a standstill and track use.

🔧 Solution:

✔️ When worn, install a reinforced clutch (Exedy, ACT, Clutch Masters).

✔️ Avoid frequent starts at high speeds.

4️⃣ Transmission noise

📌 Problem:

Manual transmission (6-speed) may hum when cold.

Gears may engage with a crunch.

🔧 Solution:

✔️ Use high-quality oil in the gearbox (Motul, Red Line, Subaru Extra-S).

✔️ Warm up the transmission before active driving.

5️⃣ Squeaking and noise in the suspension

📌 Problem:

Squeaking in the front suspension and steering rack.

Rear shock absorbers may knock.

🔧 Solution:

✔️ Lubrication of silent blocks and checking of stabilizer struts.

✔️ If there is knocking, replace the shock absorbers with KYB, Tein or Bilstein.

6️⃣ Hard and noisy interior

📌 Problem:

Plastic in the interior may creak and rattle.

Poor soundproofing – street noise can be heard even at low speeds.

🔧 Solution:

✔️ Dismantling and gluing the interior with soundproofing (STP, SGM, Comfort Mat).

✔️ Strengthening the fastenings of plastic panels.

7️⃣ Condensation in the rear lights

📌 Problem:

Condensation often accumulates in the rear lights.

🔧 Solution:

✔️ Installing ventilation holes.

✔️ In case of severe fogging – dismantling and sealing the headlight.