This page lists 28 electrical parts for the 2018 Audi Q3, across 5 part types, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 2018 Audi Q3 covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Battery (15 parts), Parking Aid Sensor (5 parts) and Lighting Control Module (LCM) (4 parts). The other 2 part types cover the remaining 4 parts.
The 2018 Audi Q3 was sold with both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
12 brands supply electrical parts for the 2018 Audi Q3, led by VEMO (5 parts), VALEO (3 parts) and DEKA (3 parts), plus 9 more brands. Quality grades include AGM and Performance AGM.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi Q3. 4 parts have it, including DEKA 9A48 (Battery) and VALEO 890001 (Parking Aid Sensor). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO Fits: 1.4L L4 Turbocharged | 439894 | 🇲🇽 MX | 140 Amps | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
This group shows a single part: VALEO 439894.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 1.4L L4 Turbocharged | 9A48 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| FVP Popular Fits: 1.4L L4 Turbocharged | PLN1AGM | 🇲🇽 MX | Platinum AGMBCI Group: 140R | View on Amazon |
| LUCAS Popular Fits: 1.4L L4 Turbocharged | LBAGM004A | 🇲🇽 MX | BCI Group: 48AGM | View on Amazon |
| DEKA Fits: 1.4L L4 Turbocharged | 9A47 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Fits: 1.4L L4 Turbocharged | 9A140R | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 1.4L L4 Turbocharged | MXH5L247 | 🇲🇽 MX | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| EXIDE Fits: 1.4L L4 Turbocharged | MXH6L348 | 🇲🇽 MX | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| FVP Fits: 1.4L L4 Turbocharged | P47AGM | 🇲🇽 MX | Platinum AGMBCI Group: 47 | View on Amazon |
| FVP Fits: 1.4L L4 Turbocharged | P48AGM | 🇲🇽 MX | Platinum AGMBCI Group: 48 | View on Amazon |
| LUCAS Fits: 1.4L L4 Turbocharged | LBAGM001A | 🇲🇽 MX | BCI Group: 47AGM | View on Amazon |
| MOTORCRAFT Fits: 1.4L L4 Turbocharged | BAGMH4 | 🇲🇽 MX | Tested Tough AGM or Tested Tough MAX SeriesBCI Group 140R or BCI Group: 99R | View on Amazon |
| P1MAX Fits: 1.4L L4 Turbocharged | PMAGMH547 | 🇲🇽 MX | BCI Group 47 AGM680 CCA | View on Amazon |
| P1MAX Fits: 1.4L L4 Turbocharged | PMAGMH648 | 🇲🇽 MX | BCI Group 48 AGM760 CCA | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 1.4L L4 Turbocharged | FT61047 | 🇲🇽 MX | BCI Group 47(Length X Width X Height) 9.49 In x 6.89 In x 7.48 In | View on Amazon |
| FULLRIVER Fits: 1.4L L4 Turbocharged | FT68048 | 🇲🇽 MX | BCI Group 48(Length X Width X Height) 10.94 In x 6.89 In x 7.48 In | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
15 Battery parts are listed for the 2018 Audi Q3, from DEKA, FVP, LUCAS and 4 other brands. DEKA 9A48 carries the "Popular" badge.
The AGM (Extended Life) section lists 13 options from DEKA, FVP, LUCAS and 3 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A48 is listed in this group.
The Performance AGM (Extended Life + Increased Power) section lists 2 options from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT61047 is listed in this group.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Fits: 1.4L L4 Turbocharged | 8U0941475B | 🇲🇽 MX | LeftLED Headlight Module | View on Amazon |
| ÜRO PARTS Fits: 1.4L L4 Turbocharged | 8U0941475C | 🇲🇽 MX | RightLED Headlight Module | View on Amazon |
| VEMO Fits: 1.4L L4 Turbocharged | V10730673 | 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 1.4L L4 Turbocharged | V10730674 | 🇲🇽 MX | View on Amazon |
This table covers the modules that control the exterior lighting.
4 Lighting Control Module (LCM) parts for the 2018 Audi Q3 come from 2 brands — ÜRO PARTS and VEMO.
Listed part numbers: ÜRO PARTS 8U0941475B, ÜRO PARTS 8U0941475C and VEMO V10730673, plus the other parts above.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO Popular Fits: 1.4L L4 Turbocharged | 890001 | 🇲🇽 MX | Park Sensor | View on Amazon |
| DORMAN Fits: 1.4L L4 Turbocharged | 684071 | 🇲🇽 MX | Front Inner | View on Amazon |
| ÜRO PARTS Fits: 1.4L L4 Turbocharged | 1S0919275D | 🇲🇽 MX | Front OuterTwo-Piece Design | View on Amazon |
| VALEO Fits: 1.4L L4 Turbocharged | 890000 | 🇲🇽 MX | Park Sensor | View on Amazon |
| WELLS Fits: 1.4L L4 Turbocharged | 5S16509 | 🇲🇽 MX | Front InnerPrimed | View on Amazon |
This table covers the ultrasonic park-aid sensors in the bumper. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
5 Parking Aid Sensor parts for the 2018 Audi Q3 come from 4 brands — VALEO, DORMAN, ÜRO PARTS and 1 other brand. The "Popular" part is VALEO 890001.
Listed part numbers: VALEO 890001, DORMAN 684071 and ÜRO PARTS 1S0919275D, plus the other parts above.
Rain Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 1.4L L4 Turbocharged | V10721603 | 🇲🇽 MX | From 05/25/2015 | View on Amazon |
| VEMO Fits: 1.4L L4 Turbocharged | V10721602 | 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 1.4L L4 Turbocharged | V10721604 | 🇲🇽 MX | with Holder | View on Amazon |
This table covers the Rain sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
3 Rain Sensor parts for the 2018 Audi Q3 come from VEMO.
Part numbers include VEMO V10721603, VEMO V10721602 and VEMO V10721604.
Buying Electrical Parts for a 2018 Audi Q3
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Every electrical part here is 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Battery and Parking Aid Sensor .
Frequently Asked Questions
How many electrical parts fit the 2018 Audi Q3?
Our catalog currently lists 28 electrical parts for the 2018 Audi Q3 across 5 subcategories and 12 brands, covering both the 1.4L L4 Turbocharged and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2018 Audi Q3 engines?
Yes. Every electrical part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 problems on a 2018 Audi Q3?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 2018 Audi Q3 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 2018 Audi Q3?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Audi Q3
Electrical Parts for Other Audi Q3 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.