The 2021 Nissan Leaf has 24 electrical switch & relay parts with verified fitment on this page — 13 part types and 6 brands, covering the ELECTRIC engine. Each part includes a manufacturer part number and application notes.
The switch and relay system on the 2021 Nissan Leaf covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Power Window Switch (6 parts), Brake Light Switch (3 parts) and Horn Relay (3 parts). The other 10 part types cover the remaining 12 parts.
The 2021 Nissan Leaf came with a single engine, the ELECTRIC, and every part is verified against it.
6 brands supply electrical switch & relay parts for the 2021 Nissan Leaf, led by WELLS (10 parts), STANDARD MOTOR PRODUCTS (6 parts) and VEMO (3 parts), plus 3 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Nissan Leaf. 2 parts have it, including STANDARD MOTOR PRODUCTS DWS1689 (Power Window Switch) and VEMO V38730069 (Power Window Switch). Each part number opens a page with every vehicle that part fits.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | RE8417 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UAC | RE8417C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
UAC supplies both parts for the 2021 Nissan Leaf.
Listed part numbers: UAC RE8417 and UAC RE8417C.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1R1921 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue | View on Amazon |
This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: WELLS 1R1921.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1R1921 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2021 Nissan Leaf — WELLS 1R1921.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2012752 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | SLS539 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S11819 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Brake Light Switch parts are listed for the 2021 Nissan Leaf, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: BECK/ARNLEY 2012752, STANDARD MOTOR PRODUCTS SLS539 and WELLS 1S11819.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13861 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Fog Lights | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: WELLS 1S13861.
Door Jamb Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 651395 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | AW1098 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front And Rear | View on Amazon |
This table covers the Door Jamb switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Door Jamb Switch parts for the 2021 Nissan Leaf come from 2 brands — ROSTRA and STANDARD MOTOR PRODUCTS.
Part numbers include ROSTRA 651395 and STANDARD MOTOR PRODUCTS AW1098.
Door Lock Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | DWS1689 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
This table covers the Door Lock switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2021 Nissan Leaf — STANDARD MOTOR PRODUCTS DWS1689.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13861 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Fog Lights | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: WELLS 1S13861.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HR159T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS | HR159 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1R1564 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 Horn Relay parts for the 2021 Nissan Leaf come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS HR159T, STANDARD MOTOR PRODUCTS HR159 and WELLS 1R1564.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1R1921 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue | View on Amazon |
This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2021 Nissan Leaf — WELLS 1R1921.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V38730074 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front RightS Model or S Plus or SL Plus or SV Model or SV Plus | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | DWS1689 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| VEMO Popular | V38730069 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearS Model or S Plus or SL Plus or SV Model or SV Plus | View on Amazon |
| ROSTRA | 660703 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| WELLS | 1S12964 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| WELLS | 1S15894 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
6 Power Window Switch parts are listed for the 2021 Nissan Leaf, from VEMO, WELLS, STANDARD MOTOR PRODUCTS and 1 other brand. STANDARD MOTOR PRODUCTS DWS1689 carries the "Popular" badge.
In the Economy grade, VEMO supplies 1 part: the catalog's value-priced group. A representative part number is VEMO V38730074.
The Standard Replacement section lists 5 options from WELLS, STANDARD MOTOR PRODUCTS, VEMO and 1 other brand — built to original-equipment specification. STANDARD MOTOR PRODUCTS DWS1689 is listed in this group.
This group includes STANDARD MOTOR PRODUCTS DWS1689, VEMO V38730074 and VEMO V38730069 and the remaining parts above.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V38730057 | 🇺🇸 US 🇨🇦 CA | SL Plus or SV Model or SV Pluswith indicator function | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2021 Nissan Leaf — VEMO V38730057.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13861 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Frontwithout Fog Lights | View on Amazon |
This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: WELLS 1S13861.
Buying Electrical Switch & Relay Parts for a 2021 Nissan Leaf
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the ELECTRIC engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Power Window Switch and Brake Light Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2021 Nissan Leaf?
Our catalog currently lists 24 electrical switch & relay parts for the 2021 Nissan Leaf across 13 subcategories and 6 brands, covering the ELECTRIC engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2021 Nissan Leaf?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Nissan Leaf was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Nissan Leaf?
Every part on this page is matched to the ELECTRIC engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Nissan Leaf
Electrical Switch & Relay Parts for Other Nissan Leaf Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.