2009-2013 BMW 328i & 335i Ignition Button: No-Start Diagnosis and Replacement Guide
This guide covers the common failure symptoms, diagnosis, and replacement for the Start/Stop ignition button in 2009-2013 BMW 328i and 335i E92 Coupe and E93 Convertible models.
- This Start/Stop button does NOT require programming; it is a simple plug-and-play replacement.
- This part (with chrome ring) is for E92 Coupe and E93 Convertible models ONLY, not the E90 Sedan or E91 Wagon.
- A no-start condition with dash lights on is almost never the button. Check the car battery, key fob battery, and starter first.
- A used OEM button is a highly reliable and cost-effective repair option compared to a new dealer part.
Is the Ignition Start/Stop Button Failing?
The Start/Stop ignition button on the 2009-2013 BMW 328i and 335i (E92 Coupe and E93 Convertible) is a common replacement item, but often for cosmetic reasons rather than functional failure. While the button can fail electrically, a no-start condition is more frequently caused by other issues. Understanding the difference is key to avoiding unnecessary repairs.
Compatibility Warning: This ignition button, featuring a chrome trim ring, fits only the E92 Coupe and E93 Convertible models of the 328i and 335i. It does not fit the E90 Sedan or E91 Wagon, which use a different switch assembly.
Symptoms of a Failing Ignition Button
Because this is a simple switch, its failure modes are straightforward. However, its symptoms can be easily confused with more complex problems.
- Button is Completely Unresponsive: The most direct symptom of failure is when you press the button and nothing happens. The dashboard does not light up, and the car makes no attempt to start.
- Intermittent Operation: The button may work sometimes but not others, requiring multiple presses to start the car. This can indicate failing internal contacts.
- Physical Wear and Tear: The lettering on the button can wear off, or the surface can become scratched. This is a purely cosmetic issue but is a common reason for replacement.
Symptoms NOT Caused by the Ignition Button
It is critical to rule out other, more common problems before replacing the Start/Stop button:
- No Crank, But Dash Lights Turn On: If the accessories and dashboard light up but the engine doesn't crank, the problem is likely a weak car battery, a failing starter motor, or a poor electrical connection, 🎬 Watch: How to replace a failing starter motor not the button itself.
- "Key Not Recognized" Warning: This message points to an issue with the key fob (dead battery) or the Car Access System (CAS) module, which reads the key. 🎬 See how to check the CAS module relay first
- Button Light Stays On (Parasitic Drain): If the button's backlight stays on for more than 30 minutes after locking the car, it is a symptom of a parasitic battery drain. This is caused by another module in the car failing to enter "sleep mode" and is not a fault of the button.
Buying a Used Ignition Switch: What to Look For
A used OEM Start/Stop button is an excellent, cost-effective choice for this repair. Since it is a simple electronic switch without complex mechanics, a tested, working unit from a reputable recycler is just as reliable as a new part.
- Verify Compatibility: Ensure the part is from an E92 Coupe or E93 Convertible. The part number should be 61319146356 or its predecessor, 61316973276.
- Inspect for Cosmetic Condition: Check photos for wear on the button's face and peeling or scratches on the chrome trim ring.
- No Programming Needed: There is no anti-theft link or programming required for this part. It is a true plug-and-play component, making a used part a hassle-free installation.
- Why Used OEM is a Smart Choice: Aftermarket buttons, especially decorative ones, may not have the same tactile feel or durability as a genuine BMW part. A used OEM button guarantees perfect fitment and original quality at a fraction of the new price.
Replacement Guide
Replacing the ignition button is a simple DIY job that can be done in under 30 minutes with basic tools.
- Remove the Dash Trim: Using a plastic trim removal tool, carefully pry away 🎬 Watch: Step-by-step guide to removing the push start button the dashboard trim piece that surrounds the Start/Stop button. It is held in by clips.
- Push the Button Out: From behind the dashboard, squeeze the two tabs on the sides of the button's housing (at the 3 and 9 o'clock positions). Push the entire assembly forward and out of the dash.
- Disconnect the Wiring: Unplug the single electrical connector from the back of the button assembly.
- Install the New Button: Plug the connector into the new button, slide it into the dash opening until it clicks into place, and then reinstall the dash trim.
Pro Tip: In some cases, only the button face is worn. You can buy just the button cover and swap it onto your existing switch housing. This involves prying off the chrome ring and then the button itself, which is held by small tabs.
Cost of Replacement
| Part Type | Estimated Cost |
|---|---|
| New OEM (Dealer) | $105 - $130 |
| New Aftermarket | $15 - $40 |
| Used OEM | $20 - $50 |
| Shop Labor | $60 - $90 |
Known Issues, Recalls, and TSBs
As of mid-2026, there are no specific recalls or Technical Service Bulletins (TSBs) from BMW or the NHTSA related to the failure of the Start/Stop ignition button for these models. While other recalls exist for the E9x platform concerning battery cables and PCV heaters, they do not involve this switch.
Frequently Asked Questions (FAQ)
Does a replacement ignition button need to be programmed?
No. The Start/Stop button is a simple plug-and-play switch. It does not contain any security information and requires no programming, coding, or dealer visit. All security and key data is stored in the separate Car Access System (CAS) module.
How do I know if the button is bad or if it's the CAS module?
A bad button usually results in a completely dead response when pressed. If you experience other electrical issues, get a "key not recognized" warning, or the car starts intermittently, the issue is more likely the CAS module, the key fob, or the vehicle's main battery. A professional diagnosis is recommended if symptoms are complex.
I replaced the button, but my car still won't start. What now?
If a new button does not solve the problem, the button was not the cause. The most common culprits for a no-start condition are a weak vehicle battery, a dead key fob battery, a faulty starter motor, or a corroded ground wire. Always test the battery and try your spare key fob before performing more complex repairs.
Are there any OBD-II codes for a bad ignition button?
No, there are no specific fault codes that point directly to the Start/Stop button. A failure might be associated with general power supply codes related to the CAS or Junction Box Electronics (JBE) modules, but these are not definitive. Diagnosis relies on observing the symptoms.
Helpful Videos
Technical Specifications
OEM Part Numbers: 61319146356 61-31-9-146-356 61316973276 61-31-6-973-276 9146356
Fits E92 Coupe and E93 Convertible. Features a chrome trim ring.
We Have This Part in Stock
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 328i:
- BMW 335i:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is the Ignition Start/Stop Button Failing?
- Symptoms of a Failing Ignition Button
- Symptoms NOT Caused by the Ignition Button
- Buying a Used Ignition Switch: What to Look For
- Replacement Guide
- Cost of Replacement
- Known Issues, Recalls, and TSBs
- Frequently Asked Questions (FAQ)
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