2009 Peugeot 308 CC 1.6 THP 156 automatic – Workshop Service & Repair Manual

Common Questions & Solutions for Your 2009 Peugeot 308 CC 1.6 THP 156 Automatic

• My 2009 Peugeot 308 CC's convertible roof is stuck or not operating. What should I check?

  If your convertible roof is misbehaving, first check that the parcel shelf in the boot is properly in place and secured. The system has a safety sensor there. Next, ensure your car's battery is well-charged; roof operation needs plenty of power, and a low battery might trigger "economy mode." Also, take a peek at fuse number 1 in the under-bonnet fuse box; a blown fuse is often a simple fix. Lastly, visually inspect the roof mechanism for any obvious obstructions or signs of hydraulic fluid leaks, particularly in the boot area.

• I hear a rattling noise from my 1.6 THP engine, especially on cold starts. What could be the problem?

  That rattling sound you're hearing, especially when the engine is cold, quite often indicates a timing chain issue with the 1.6 THP "Prince" engine. It's a known weak spot for these engines. Typically, it's either a stretched timing chain or a failing hydraulic tensioner. If the noise tends to quiet down once the engine warms up, that's a strong hint. You really should get this checked out by a professional quickly, as ignoring it can lead to more serious engine damage down the road.

• My 2009 Peugeot 308 CC automatic transmission shifts harshly or goes into "limp mode." What can cause this?

  Harsh shifts, particularly from 1st to 2nd gear, or the gearbox entering "limp mode" (often stuck in 3rd gear) are common with the AL4 automatic transmission. A frequent culprit is faulty pressure regulation solenoid valves, which can cause the transmission's computer to detect incorrect pressure. Also, old or low transmission fluid is a big factor. Even if Peugeot suggested "sealed for life," changing the fluid every 60,000 km is a very wise preventative measure. A diagnostic scan will help pinpoint the exact cause for sure.

• My 1.6 THP engine seems to be consuming a lot of oil. Is this normal, and what should I do?

  A little bit of oil consumption is somewhat typical for direct injection THP engines, sometimes around a liter per 5,000 km. However, excessive consumption might point towards worn piston rings or valve stem seals. It's really important to regularly check your oil level and top it up as needed with a high-quality, fully synthetic oil. Some owners find more frequent oil changes, perhaps every 5,000 km, beneficial. Also, consider having the turbocharger inspected for any leaks, as that can contribute to oil loss too.

• Why does my 2009 Peugeot 308 CC have random electrical issues, and how can I prevent them?

  Random electrical issues, or "gremlins," can unfortunately crop up in some 308 CC models. A known design quirk lets rainwater from the windscreen area drip directly onto the battery and the engine's ECU, potentially causing corrosion and various electrical faults. You might see warning lights for things like ABS, ESP, or even the gearbox. It's a good idea to check the area under your windscreen scuttle panel for dampness. Some owners have successfully used a simple plastic cover to divert water away from those sensitive electrical components. Also, ensure your battery and alternator are in good health.