This page lists 15 electrical switch & relay parts for the 2020 Genesis G90, across 9 part types, covering both the 3.3L V6 Turbocharged and the 5.0L V8. Every part shows its brand, manufacturer part number and fitment notes.
On the 2020 Genesis G90, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Brake Light Switch (4 parts), A/C Refrigerant Pressure Switch (2 parts) and Accessory Power Relay (2 parts). The other 6 part types cover the remaining 7 parts.
The 2020 Genesis G90 was sold with both the 3.3L V6 Turbocharged and the 5.0L V8. 10 parts fit every engine; the other 5 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 Genesis G90 electrical switch & relay parts are WELLS (6 parts), HYUNDAI (3 parts) and VEMO (2 parts), plus 3 more brands.
Each part number listed for the 2020 Genesis G90 opens a page with every vehicle that part fits.
A/C Pressure Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: all 2020 G90 engines | V52730043 | 🇺🇸 US 🇨🇦 CA | FR Cooler - Dual Full Auto A/CDouble Pipe IHX | View on Amazon |
This table covers the A/C Pressure Safety 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 2020 Genesis G90 — VEMO V52730043.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: all 2020 G90 engines | 97721D2000 | 🇺🇸 US | Included with liquid line, suction hose, discharge hose, hose and tube assembly | View on Amazon |
| UAC Fits: all 2020 G90 engines | SW9969C | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
This table covers the pressure switches on the A/C circuit. 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 A/C Refrigerant Pressure Switch parts for the 2020 Genesis G90 come from 2 brands — HYUNDAI and UAC. Every part fits both the 3.3L V6 Turbocharged and the 5.0L V8.
Part numbers include HYUNDAI 97721D2000 and UAC SW9969C.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: all 2020 G90 engines | 952302P020 | 🇺🇸 US | Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2020 G90 engines | RY1850 | 🇺🇸 US 🇨🇦 CA | In Engine Compartment | 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.
2 Accessory Power Relay parts are listed for the 2020 Genesis G90, from HYUNDAI and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2020 G90.
Part numbers include HYUNDAI 952302P020 and STANDARD MOTOR PRODUCTS RY1850.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: all 2020 G90 engines | 93810G8100 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2020 G90 engines | SLS605 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VEMO Fits: all 2020 G90 engines | V52730054 | 🇺🇸 US 🇨🇦 CA | Fits or From 01/07/2019 | View on Amazon |
| WELLS Fits: all 2020 G90 engines | 1S17052 | 🇺🇸 US 🇨🇦 CA | 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.
4 Brake Light Switch parts for the 2020 Genesis G90 come from 4 brands — HYUNDAI, STANDARD MOTOR PRODUCTS, VEMO and 1 other brand. Every part fits both the 3.3L V6 Turbocharged and the 5.0L V8.
This group includes HYUNDAI 93810G8100, STANDARD MOTOR PRODUCTS SLS605 and VEMO V52730054 and the remaining parts above.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2020 G90 engines | 1S17996 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2020 Genesis G90 — WELLS 1S17996.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.3L V6 Turbocharged | 1S17996 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2020 Genesis G90 — WELLS 1S17996.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.3L V6 Turbocharged | 1S17502 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the ignition switches that feed the starter circuit. 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 2020 Genesis G90 — WELLS 1S17502.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 3.3L V6 Turbocharged | 1816546 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 3.3L V6 Turbocharged | 1S16077 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
2 Oil Pressure Sender / Switch parts for the 2020 Genesis G90 come from 2 brands — GPD and WELLS.
This group includes GPD 1816546 and WELLS 1S16077.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.3L V6 Turbocharged | 1S17996 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: WELLS 1S17996.
Buying Electrical Switch & Relay Parts for a 2020 Genesis G90
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Some electrical switch & relay parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Brake Light Switch and A/C Refrigerant Pressure Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2020 Genesis G90?
Our catalog currently lists 15 electrical switch & relay parts for the 2020 Genesis G90 across 9 subcategories and 6 brands, covering both the 3.3L V6 Turbocharged and the 5.0L V8. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2020 Genesis G90 engines?
Some do. 10 parts fit every engine; the other 5 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 2020 Genesis G90?
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 2020 Genesis G90 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 2020 Genesis G90?
First match the engine — each row shows which engine(s) the part fits. 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 2020 Genesis G90
Electrical Switch & Relay Parts for Other Genesis G90 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.