TSB: BMW M3, M4 (2015)

Bulletin 123714 — December 1, 2014

Bulletin Details

Bulletin ID123714
ManufacturerBMW
ModelsM3, M4
Model Years2015
Date IssuedDecember 1, 2014
Date Added to NHTSANovember 13, 2018
ComponentENGINE AND ENGINE COOLING
Vehicles Affected2 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Service Engine Soon Light (MIL) On with Oxygen Sensor Faults Stored. The Service Engine Soon light comes on while driving and, in some cases, engine power output may be reduced. The following fault codes can be stored in the DME memory: ? 1

Affected Vehicles

MakeModelYearComponent
BMW M3 2015 060000 ENGINE AND ENGINE COOLING
BMW M4 2015 060000 ENGINE AND ENGINE COOLING

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BMW dealer. Bring this bulletin ID (123714) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.