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Audi B101C07

The risk of serious or fatal injury increases if the seat belt is not fastened, if it is worn incorrectly, or if it is damaged. See owner’s manual for additional information and wa

DriveNot yet established by verified evidence. Regardless of warning status, wear an undamaged seat belt correctly and do not use a device that defeats normal seat-belt operation.
ChargeNot yet established by verified evidence.
ServiceContact an Audi service provider for applicable GFF diagnosis, particularly if the warning remains after normal seat-belt use or if there is concern about seat-belt condition or operation.
Confidence95%

Quick answer

Audi DTC B101C07 is associated with a seat-belt/Pre Sense warning. Verified Audi communications state that, when the seat-belt latch switch is not defective, use of a seat-belt extender, a seat-belt cheat device, or leaving the belt continuously buckled can cause the concern. Do not use devices that defeat seat-belt use.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does B101C07 mean?

Audi DTC B101C07 is associated with a seat-belt/Pre Sense warning. Verified Audi communications state that, when the seat-belt latch switch is not defective, use of a seat-belt extender, a seat-belt cheat device, or leaving the belt continuously buckled can cause the concern. Do not use devices that defeat seat-belt use.

2. Technical explanation

The verified manufacturer communications instruct technicians to use applicable Guided Fault Finding (GFF) test plans. If GFF finds the seat-belt latch switch is not defective, the communications identify a seat-belt extender, seat-belt cheat device, or continuously buckling the belt as possible contributors. They also state that one drive cycle including latching and unlatching the seat belt is sufficient to change B101C07 from static to sporadic and turn off the Pre Sense warning in the instrument cluster. The communications specifically note that parts replacement does not solve this issue.

3. What system is affected?

Seat-belt latch-switch and Pre Sense warning-related system.

4. How serious is this code?

The supplied diagnostic record does not assign a severity. Audi’s warning states that the risk of serious or fatal injury increases when a seat belt is not fastened, worn incorrectly, or damaged.

5. Symptoms you may notice

  • Pre Sense warning in the instrument cluster.
  • DTC B101C07 may be stored as static; after one drive cycle with seat-belt latching and unlatching, it may change to sporadic and the Pre Sense warning may turn off.

6. Possible causes

  • A seat-belt extender, if GFF indicates the seat-belt latch switch is not defective.
  • A seat-belt cheat device, if GFF indicates the seat-belt latch switch is not defective.
  • Leaving the seat belt continuously buckled, if GFF indicates the seat-belt latch switch is not defective.
  • Whether a defective seat-belt latch switch is the cause in an individual vehicle is not yet established by verified evidence; Audi directs use of applicable GFF test plans.

7. Can I still drive the vehicle?

Not yet established by verified evidence. Regardless of warning status, wear an undamaged seat belt correctly and do not use a device that defeats normal seat-belt operation.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Fasten the seat belt correctly before driving.
  • Do not use a seat-belt cheat device.
  • Do not leave the seat belt continuously buckled when it is not being worn.
  • If used, remove a seat-belt extender as appropriate and use the seat belt normally.
  • Consult the owner’s manual for additional seat-belt warnings.

10. Step-by-step troubleshooting

  1. Have an Audi-qualified service provider perform the applicable GFF test plans.
  2. Where applicable, complete a normal drive cycle that includes latching and unlatching the seat belt. Audi states this can change B101C07 from static to sporadic and turn off the Pre Sense warning.
  3. Do not replace parts solely on the basis of this DTC; the verified Audi communications state that parts replacement does not solve this issue.

11. When to contact service

Contact an Audi service provider for applicable GFF diagnosis, particularly if the warning remains after normal seat-belt use or if there is concern about seat-belt condition or operation.

12. What the service center may check

  • Perform the applicable GFF test plans.
  • Determine through GFF whether the seat-belt latch switch is defective.
  • If the latch switch is not defective, assess whether a seat-belt extender, cheat device, or continuously buckled belt is contributing to the concern.

13. Possible repair or resolution

  • The verified communications state that parts replacement does not solve this issue.
  • If GFF finds no defective seat-belt latch switch, discontinue the identified contributing use conditions and operate the belt normally.
  • One drive cycle with latching and unlatching the seat belt is stated to change the DTC from static to sporadic and turn off the Pre Sense warning.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Audi manufacturer communication A6921752056421_6, NHTSA MC-10205964, published December 23, 2021: https://static.nhtsa.gov/odi/tsbs/2021/MC-10205964-0001.pdf
  • Audi manufacturer communication A6921732056421_5, NHTSA MC-10203595, published November 17, 2021: https://static.nhtsa.gov/odi/tsbs/2021/MC-10203595-0001.pdf
  • Audi manufacturer communication A6920572056421_3, NHTSA MC-10179111, published August 31, 2020: https://static.nhtsa.gov/odi/tsbs/2020/MC-10179111-0001.pdf
  • Audi manufacturer communication A6920462056421_2, NHTSA MC-10171343, published February 6, 2020: https://static.nhtsa.gov/odi/tsbs/2020/MC-10171343-0001.pdf
  • Audi manufacturer communication A6919442056421_1, NHTSA MC-10166757, published October 11, 2019: https://static.nhtsa.gov/odi/tsbs/2019/MC-10166757-0001.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified applicability is for US-market Audi A7 (2019–2023 across supplied records), A8 (2019–2023 across supplied records), e-tron (2019–2023 across supplied records), e-tron GT (2020–2023), and RS e-tron GT (2020–2023). Exact applicability should be confirmed by vehicle identification and service records.

19. Frequently asked questions

What does Audi code B101C07 indicate?

The supplied verified record associates it with a warning that improper, unfastened, or damaged seat-belt use increases the risk of serious or fatal injury. Audi communications address a seat-belt latch-switch/Pre Sense warning concern under this DTC.

Can a seat-belt extender or cheat device cause B101C07?

Audi states that if GFF determines the seat-belt latch switch is not defective, a seat-belt extender or seat-belt cheat device could cause the concern.

Will replacing parts fix B101C07?

The verified Audi communications state that parts replacement does not solve this issue.

Can the Pre Sense warning turn off after normal seat-belt use?

Audi states that one drive cycle with latching and unlatching the seat belt is sufficient to change B101C07 from static to sporadic and turn off the Pre Sense warning.

20. Sources & verification

Verified
Audi B101C07: The risk of serious or fatal injury increases if the… | EV Diagnostics