# Service bulletin No. 77\-20

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: 10177968
- Published by NHTSA: 2020\-08\-05
- Manufacturer's number: No. 77\-20
- Manufacturer's date: 2020\-07\-29
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Campaign instructions for Porsche workshop campaign WLD0 \- Replacing High\-Voltage Line Between High\-Voltage Distributor and E\-Box.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10177968-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10177968-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2020 PORSCHE TAYCAN

## Recalls for the same vehicles and component

- [24V732000](/recalls/nhtsa/24V732000.md), 2024-10-01: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:SOFTWARE
- [24V731000](/recalls/nhtsa/24V731000.md), 2024-10-01: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:SOFTWARE
- [24V217000](/recalls/nhtsa/24V217000.md), 2024-03-20: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [24V215000](/recalls/nhtsa/24V215000.md), 2024-03-20: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [23V841000](/recalls/nhtsa/23V841000.md), 2023-12-13: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
- [23V347000](/recalls/nhtsa/23V347000.md), 2023-05-16: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SERVICE BRAKES, HYDRAULIC
- [23V176000](/recalls/nhtsa/23V176000.md), 2023-03-17: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SEAT BELTS:FRONT:WARNING LIGHT/DEVICES
- [21V486000](/recalls/nhtsa/21V486000.md), 2021-06-29: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR:CONTROLLER:SOFTWARE

## Other bulletins for the same vehicles and component

- [GR13D804](/bulletins/11037872.md), 2026-10-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM; VISIBILITY/WIPER; FUEL/PROPULSION SYSTEM. Parts Information for Parts Withdrawal \- High\-Voltage Heating \(PTC\)
- [WTL2](/bulletins/11037863.md), 2026-10-02, Service campaign: FUEL/PROPULSION SYSTEM; VISIBILITY/WIPER; ELECTRICAL SYSTEM; STRUCTURE:BODY; POWER TRAIN. Porsche intranet posting for Campaign WTL2 – Replacing Electric Passenger Compartment Heater
- [No. WTL2](/bulletins/11037862.md), 2026-10-02, Service campaign: ELECTRICAL SYSTEM; STRUCTURE:BODY; FUEL/PROPULSION SYSTEM; VISIBILITY/WIPER; POWER TRAIN. Technical Information for Campaign WTL2 – Replacing Electric Passenger Compartment Heater
- [No. 86\-26](/bulletins/11037805.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer \(PCM\)
- [No. 12\-26](/bulletins/11037795.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
- [No. 43\-26](/bulletins/11037785.md), 2026-10-02, Warranty extension: VISIBILITY/WIPER; ELECTRICAL SYSTEM. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View \(RTV\) issues
- [WTL5](/bulletins/11037066.md), 2026-09-04, Over\-the\-air update: FUEL/PROPULSION SYSTEM; POWER TRAIN; ELECTRICAL SYSTEM. Porsche intranet posting for Campaign WTL5 Over\-the\-Air \(OTA\) Update– Reprogramming the high\-voltage battery control unit \(BMCe\)
- [No. WSL3](/bulletins/11037064.md), 2026-09-04, Service campaign: ELECTRICAL SYSTEM; VISIBILITY/WIPER. Technical Information for Workshop Campaign WSL3 – Replacing the Electric Passenger Compartment Heater
- [No. 2433\-4](/bulletins/11037061.md), 2026-09-04, Service bulletin: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. Information on Advanced Technical Information for Porsche Mobile Charger NEMA Supply Cable Initialization Failure
- [No. 2315\-1](/bulletins/11037060.md), 2026-09-04, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Information on Advanced Technical Information for Porsche Mobile Charger Plus \(PMC\+\) Red LEDs and Fault B191E49

JSON: [/v1/bulletins/10177968](/v1/bulletins/10177968)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20No.%2077-20&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10177968&vehicle=Service%20bulletin%20No.%2077-20)