BMW S428A — Warning triangle and first-aid kit
Factory warning triangle and first-aid kit.
Quick answer
S428A is BMW's factory option code for warning triangle and first-aid kit. Factory warning triangle and first-aid kit.
Should you care about Warning triangle and first-aid kit?
Trivial, but useful for European driving compliance.
How to tell if a BMW has S428A
- Look for
S428Aor just428on the original build sheet or window sticker. - Check the options list in the AutoTrader, eBay or dealer listing.
- Decode it from the VIN with our free BMW VIN decoder, then confirm the fitted codes in a full report.
- Where relevant, verify it physically on the car during the viewing, as described above.
Bimmer.AI is designed to help you identify BMW-specific buyer risks before you travel, negotiate, or pay for an inspection. It does not replace a physical inspection by a qualified mechanic, a legal vehicle-history check (e.g. HPI Check), or independent verification of finance, stolen, or write-off status. Repair-cost ranges are indicative UK figures that vary by region, specialist, parts supply, and labour rates.
Decode this car's full factory spec
Bimmer.AI takes the VIN and option codes and returns the decoded equipment list alongside the MOT history, known faults and a buyer verdict.
Run a Bimmer.AI report →Frequently asked questions
What does BMW option code S428A mean?
Factory warning triangle and first-aid kit. It sits in the safety & security group of BMW's factory options.
Is Warning triangle and first-aid kit worth having on a used BMW?
Trivial, but useful for European driving compliance.
How do I check if a BMW has S428A?
Look for S428A (or just 428) on the car's build sheet or in the listing's options, or decode it from the VIN. You can enter the VIN and option codes into a Bimmer.AI report to see the full decoded factory spec alongside the MOT history and known faults.