A Guide to the Starter for the 2010-2016 BMW Z4 (E89)
Don't get stranded—understand the signs of a failing starter and choose the right aftermarket replacement for your Z4.
- A single loud click is a classic sign of a bad starter; rapid clicking often points to a weak battery.
- Replacement is a difficult DIY job, as the starter is located under the intake manifold.
- For best results, choose an OEM-brand aftermarket starter from Bosch or Valeo.
- While replacing the starter, it is highly recommended to also replace the intake manifold gaskets to prevent future vacuum leaks.
Is Your Z4's Starter Failing?
A failing starter can be mistaken for a dead battery. Before buying parts, make sure your battery is fully charged and the terminals are clean. If the battery is healthy, the starter is the next likely culprit for a no-start condition. The most common signs of a bad starter are distinct sounds you'll hear when you try to start the car.
🎬 Watch: Hear the 5 most common symptoms of a bad starter.Symptoms of a Bad Starter
- Single Loud Click: You press the start button and hear one loud click, but the engine doesn't turn over. This often means the starter's solenoid is working, but the motor itself is not.
- Rapid Clicking Noise: A fast, repetitive clicking sound usually points to a battery that doesn't have enough power to engage the starter motor. However, if the battery is good, it could still be an electrical issue with the starter.
- Grinding Noise: A grinding or whirring sound during or after cranking can indicate that the starter gear is not engaging properly with the engine's flywheel, or it is not retracting correctly.
- No Sound at All: If you press the start button and nothing happens—no click, no crank—it could be a completely failed starter, a bad ignition switch, or a faulty starter relay.
- Smoke or Burning Smell: If you see smoke or smell burning plastic after trying to start the engine, stop immediately. This can be caused by the starter overheating and can create a fire hazard.
Important: Check for Recalls
While no major starter recalls specifically cover the 2010-2016 Z4 (E89) model years, later Z4 generations have been recalled for starter relays that can corrode and cause a fire risk. It is always a good practice to check for any open recalls on your vehicle by entering your VIN on the NHTSA website.
Choosing the Right Aftermarket Starter
When replacing the starter on your Z4, you have several quality aftermarket options. Since the replacement is a labor-intensive job, choosing a reliable part is crucial to avoid doing the work twice.
Tier 1: OEM Brands (Bosch & Valeo)
Bosch and Valeo were the Original Equipment Manufacturers (OEM) for many BMW parts during this period. Choosing a new starter from one of these brands is the closest you can get to the original part's quality and fitment. They are engineered to meet BMW's specifications and are the most recommended choice for reliability.
Tier 2: High-Quality Aftermarket (Denso)
Denso is a well-respected Japanese brand known for making high-quality electrical components that often meet or exceed OEM standards. A Denso starter is an excellent choice and is known for its durability and efficient power draw.
Tier 3: Budget-Friendly Options (Remy, BBB Industries)
Brands like Remy and BBB Industries offer more affordable starter options. While they can provide significant cost savings, they may not have the same long-term reliability and robust construction as the OEM-tier brands. These are viable if budget is the primary concern, but for a vehicle like the Z4, investing in a higher-tier brand is often worth the extra cost for peace of mind.
Starter Replacement Cost for 2010-2016 BMW Z4
The cost to replace the starter varies based on the parts you choose and labor rates in your area. The job is moderately difficult because the starter is located underneath the intake manifold.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Starter | $109 - $320 |
| New OEM Starter | $370 - $625 |
| Shop Labor | $225 - $450+ |
| Total Professional Replacement | $590 - $960+ |
Pro Tip: Replace Gaskets at the Same Time
Since the intake manifold must be removed to access the starter, this is the perfect time to replace the intake manifold gaskets. These gaskets can become brittle over time and cause vacuum leaks. Replacing them during the starter job is inexpensive and saves you from having to do the same labor all over again in the future.
Frequently Asked Questions
How difficult is it to replace the Z4 starter myself?
For a DIYer, this is a moderately difficult job. It requires removing the engine air intake and the entire intake manifold to get access. You will need a good set of tools, including E-Torx sockets. While some skilled mechanics can do it without fully removing the manifold, it is very challenging. Plan for several hours if it's your first time. Difficulty is around 4 out of 5.
🎬 Watch this step-by-step walkthrough of the Z4 starter removal process.Is it the starter or the battery?
A weak or dead battery is the most common cause of a no-start. Before replacing the starter, fully charge or test your battery. If the car starts with a jump-start but won't start on its own, the problem is likely the battery or alternator, not the starter. If it just clicks or doesn't crank at all even with a jump, the starter is the probable cause.
Can I drive my Z4 with a failing starter?
You can, but it's a gamble. A failing starter is often intermittent at first, meaning it might start fine one time and leave you stranded the next. It is best to replace it as soon as you confirm it's failing to avoid being stuck somewhere and needing a tow.
Do I need to register or code the new starter?
On some newer BMWs, it is recommended to perform a "starter exchange" reset using a diagnostic tool. This resets the car's counter for the number of starts on the component. While not always mandatory for the car to start, it is good practice to ensure the vehicle's power management system functions correctly 🎬 See how to diagnose a BMW starter using a diagnostic scanner. with the new part.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12412354693 12417616502 12418614519 12417521116
Fits 2010-2016 BMW Z4 (E89) with N20, N52, N54, and N55 engines. The starter is a 12V motor, typically rated around 1.7kW, with a 9-tooth clockwise-rotation gear. It is mounted to the engine block and engages with the transmission bell housing.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW Z4: