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BMW Z4 Roadster Common Problems and Solutions

Leaks into boot

Problem:

On earlier models of the second generation, there are known problems with a poorly designed rear bumper vent. This allows water to leak into the boot and could potentially damage some of the various electric modules that are stored in the boot. If you have noticed dampness, or wet patches in the boot, this is the most likely cause.

Models affected:

Solution:

BMW should fix this issue under warranty and fit a modified bumper vent.

Difficulty level

5

Leaks into boot

Problem:

On earlier models of the second generation, there are known problems with a poorly designed rear bumper vent. This allows water to leak into the boot and could potentially damage some of the various electric modules that are stored in the boot. If you have noticed dampness, or wet patches in the boot, this is the most likely cause.

Models affected:

Solution:

BMW should fix this issue under warranty and fit a modified bumper vent.

Difficulty level

5

Engine misfiring

Problem:

Have you been having problems with your engine misfiring? This usually happens when the engine is idling and is caused by a broken DISA valve. You may also hear a rattling noise coming from the engine.

Models affected:

Solution:

Fitting a replacement DISA valve will resolve the issue. Watch the video below for more information and to see what this part looks like and what causes it:

Difficulty level

3

Exhaust rattleCan you hear a rattling noise coming from underneath the car? This rattling noise will be most noticeable when driving over rough surfaces, or speed bumps. This is caused by a faulty flap in the rear section of the exhaust.

Problem:

Can you hear a rattling noise coming from underneath the car? This rattling noise will be most noticeable when driving over rough surfaces, or speed bumps. This is caused by a faulty flap in the rear section of the exhaust.

Models affected:

Solution:

You will need to fit a replacement flap to sort the issue. We can help you to find your replacement exhaust parts, at very low prices.

Difficulty level

3

Broken hood mechanism

Problem:

On the second generation (2009-present) Roadster, the folding roof mechanism is stored in the boot, which needs to be emptied, in order to allow the roof to fold in. This mechanism has a plastic moulding, which is easily damaged, especially if there is anything left in the boot when trying to fold down the roof. The most likely damage will be a crack in this moulding.

Models affected:

Solution:

If the plastic moulding is damaged, you will need to fit a replacement moulding, in order to fix the problem.

Difficulty level

3

Reading these common BMW Z4 Roadster problems should help you find out what is wrong with your BMW Z4 Roadster – or just what to look out for in the future. We’ll also give suggestions on what to do if your BMW Z4 Roadster does have one of these issues.