# Service bulletin B651621

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10201147
- Published by NHTSA: 2021\-09\-07
- Manufacturer's number: B651621
- Manufacturer's date: 2021\-07\-01
- NHTSA component: EQUIPMENT:ELECTRICAL

## NHTSA's summary

Navigation announcement is very loud when the convertible top is open and can not be adjusted to a lower volume.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201147-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201147-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories

## Vehicles listed

- 2019 to 2021 BMW Z4

## Other bulletins for the same vehicles and component

- [B610524](/bulletins/10249032.md), 2024-02-01, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. The Central Information Display goes black intermittently due to resets of the Head Unit \(HU\-H3\). FaultB7F8F9 â“ âHU\-H: Resetâ will be stored in the HU\-H3.
- [B840323](/bulletins/10239615.md), 2023-07-24, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. BMW AG has issued a Delivery Stop \(effective February 9, 2023\) on certain Model Year 2022 \- 2023 BMW vehicles that were produced between June 29, 2022 and February 16, 2023.
- [B611320](/bulletins/10239608.md), 2023-07-24, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. In the event of an accident, the two\-battery Dual Storage System \(DSS\) is disconnected from the electrical system via an internal relay.
- [B120323](/bulletins/10239601.md), 2023-07-24, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. BMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023 \- 2024 BMW vehicles that were produced between October 26, 2022 and May 8, 2023.
- [B840323](/bulletins/10238093.md), 2023-06-26, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. BMW AG has issued a Delivery Stop \(effective February 9, 2023\) on certain Model Year 2022 \- 2023 BMW vehicles that were produced between June 29, 2022 and February 16, 2023. This was originally called ""Wireless Charging Tray"". Software in potentially affected vehicles may not recognize the removal of the digital key \(Key Card or mobile phone\) from the wireless charging tray, and thereby not meeting a federal requirement."
- [B841422](/bulletins/10235206.md), 2023-05-01, Service bulletin: LANE DEPARTURE:LANE KEEP:NAVIGATION SYSTEM/SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). Customer is shown an incorrect GPS location in the vehicle \(i.e., Nav Map, coordinates\).
- [B651623](/bulletins/10235203.md), 2023-05-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer states there is no audio playback \(telephony, navigation, radio\) and system sounds \(PDC, turn indicators, acoustic signals\) may also have failed.
- [B652021](/bulletins/10233169.md), 2023-03-20, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. BMW AG has issued a Delivery Stop \(effective October 25, 2021\) on certain Model Year 2022 BMW vehicles that were produced after October 25, 2021. Due to supply chain limitations, certain vehicles were produced without a CID with touch function and and without Reversing Assistant.
- [B650422](/bulletins/10233166.md), 2023-03-20, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Due to component\-related supply issues, the central information displays \(CID\) in some of the Model Year 2022 vehicles listed above were produced without the integrated touch screen function.
- [B610223](/bulletins/10233163.md), 2023-03-20, Service bulletin: EQUIPMENT; VISIBILITY. Check control message \(CCM\) 183 Windscreen wiper malfunction is displayed.

JSON: [/v1/bulletins/10201147](/v1/bulletins/10201147)

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