This page lists 57 electrical parts for the 2018 Audi TT, across 6 part types, covering all 3 engine options (1.8L L4 Turbocharged, 2.0L L4 Turbocharged and 2.5L L5 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 Audi TT, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 47 parts of the 57 listed are Battery (36 parts), Parking Aid Sensor (6 parts) and Starter Motor (5 parts). The other 3 part types cover the remaining 10 parts.
The 2018 Audi TT was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
21 brands supply electrical parts for the 2018 Audi TT, led by DEKA (8 parts), FVP (6 parts) and EXIDE (6 parts), plus 18 more brands. Quality grades include AGM, Remanufactured and New.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi TT. 10 parts have it, including DEKA 9A47 (Battery) and STANDARD MOTOR PRODUCTS PPS120 (Parking Aid Sensor). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Fits: 2.5L L5 Turbocharged | 221073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Body code FV150 Amps | View on Amazon |
| VALEO Fits: 2.5L L5 Turbocharged | 443007 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 180 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.
2 Alternator / Generator parts for the 2018 Audi TT come from 2 brands — TYC and VALEO.
This group includes TYC 221073 and VALEO 443007.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 2.5L L5 Turbocharged | 9A47 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Popular Fits: 2.5L L5 Turbocharged | 9A48 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Popular Fits: 2.5L L5 Turbocharged | 9A94R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| FVP Popular Fits: 2.5L L5 Turbocharged | P94RAGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 94R | View on Amazon |
| LUCAS Popular Fits: 2.5L L5 Turbocharged | LBAGM005A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group: 94RAGM | View on Amazon |
| ACDELCO Fits: 2.5L L5 Turbocharged | 94RAGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| ACDELCO Fits: 2.5L L5 Turbocharged | 94RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 94R | View on Amazon |
| ACDELCO Fits: 2.5L L5 Turbocharged | 49AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 49 | View on Amazon |
| ACDELCO Fits: 2.5L L5 Turbocharged | 49AGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| BOSCH Fits: 2.5L L5 Turbocharged | S6587B | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AGMAGM | View on Amazon |
| BOSCH Fits: 2.5L L5 Turbocharged | S6588B | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AGMAGM | View on Amazon |
| DEKA Fits: 2.5L L5 Turbocharged | 9A49 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 2.5L L5 Turbocharged | MXH6L348 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| EXIDE Fits: 2.5L L5 Turbocharged | MXH7L494R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 94R (H7) | View on Amazon |
| EXIDE Fits: 2.5L L5 Turbocharged | MXH8L549 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 49 (H8) | View on Amazon |
| FVP Fits: 2.5L L5 Turbocharged | P49AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 49 | View on Amazon |
| FVP Fits: 2.5L L5 Turbocharged | P48AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 48 | View on Amazon |
| LUCAS Fits: 2.5L L5 Turbocharged | LBAGM006A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group: 49AGM | View on Amazon |
| MOTORCRAFT Fits: 2.5L L5 Turbocharged | BAGM49H8 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Tested Tough AGMBCI Group: 49/H8 or BCI Group 49 | View on Amazon |
| P1MAX Fits: 2.5L L5 Turbocharged | PMAGMH794R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 94R AGM800 CCA | View on Amazon |
| P1MAX Fits: 2.5L L5 Turbocharged | PMAGMH849 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 49 AGM850 CCA | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 2.5L L5 Turbocharged | FT85094R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 94R(Length X Width X Height) 12.36 In x 6.85 In x 7.48 In | View on Amazon |
| FULLRIVER Fits: 2.5L L5 Turbocharged | FT89049 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 49(Length X Width X Height) 13.9 In x 6.89 In x 7.48 In | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 1.8L L4 Turbocharged | 9A48 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Popular Fits: 1.8L L4 Turbocharged | 9A94R | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| FVP Popular Fits: 1.8L L4 Turbocharged | P94RAGM | 🇲🇽 MX | Platinum AGMBCI Group: 94R | View on Amazon |
| BOSCH Fits: 1.8L L4 Turbocharged | S6587B | 🇲🇽 MX | AGMAGM | View on Amazon |
| BOSCH Fits: 1.8L L4 Turbocharged | S6588B | 🇲🇽 MX | AGMAGM | View on Amazon |
| DEKA Fits: 1.8L L4 Turbocharged | 9A47 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Fits: 1.8L L4 Turbocharged | 9A49 | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 1.8L L4 Turbocharged | MXH6L348 | 🇲🇽 MX | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| EXIDE Fits: 1.8L L4 Turbocharged | MXH7L494R | 🇲🇽 MX | Marathon MaxBCI Group 94R (H7) | View on Amazon |
| EXIDE Fits: 1.8L L4 Turbocharged | MXH8L549 | 🇲🇽 MX | Marathon MaxBCI Group 49 (H8) | View on Amazon |
| FVP Fits: 1.8L L4 Turbocharged | P49AGM | 🇲🇽 MX | Platinum AGMBCI Group: 49 | View on Amazon |
| FVP Fits: 1.8L L4 Turbocharged | P48AGM | 🇲🇽 MX | Platinum AGMBCI Group: 48 | View on Amazon |
| MOTORCRAFT Fits: 1.8L L4 Turbocharged | BAGM49H8 | 🇲🇽 MX | Tested Tough AGMBCI Group: 49/H8 or BCI Group 49 | 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.
36 Battery parts are listed for the 2018 Audi TT, from DEKA, FVP, EXIDE and 6 other brands. DEKA 9A47 carries the "Popular" badge. AGM (Extended Life) and Performance AGM (Extended Life + Increased Power) are all represented, and AGM (Extended Life) alone accounts for 21 parts.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Fits: 2.5L L5 Turbocharged | 4G0907697F | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED Headlights | View on Amazon |
| VEMO Fits: 2.5L L5 Turbocharged | V10730414 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 2.5L L5 Turbocharged | V10730413 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 2.5L L5 Turbocharged | V10730639 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the modules that control the exterior lighting.
4 Lighting Control Module (LCM) parts for the 2018 Audi TT come from 2 brands — VEMO and ÜRO PARTS.
Listed part numbers: ÜRO PARTS 4G0907697F, VEMO V10730414 and VEMO V10730413, plus the other parts above.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.5L L5 Turbocharged | PPS120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| HELLA Fits: 2.5L L5 Turbocharged | 358141711 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3-Pin ConnectorPlugged | View on Amazon |
| HELLA Fits: 2.5L L5 Turbocharged | 358270331 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3-Pin ConnectorPlugged | View on Amazon |
| MARELLI Fits: 1.8L L4 Turbocharged | SDP101 | 🇲🇽 MX | Fits Right | View on Amazon |
| MARELLI Fits: 1.8L L4 Turbocharged, 2.5L L5 Turbocharged | SDP107 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearFrom 08/2015 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.5L L5 Turbocharged | PPS212 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | 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.
6 Parking Aid Sensor parts for the 2018 Audi TT come from 3 brands — STANDARD MOTOR PRODUCTS, HELLA and MARELLI. The "Popular" part is STANDARD MOTOR PRODUCTS PPS120.
Listed part numbers: STANDARD MOTOR PRODUCTS PPS120, HELLA 358141711 and HELLA 358270331, plus the other parts above.
Rain Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 1.8L L4 Turbocharged, 2.5L L5 Turbocharged | V10721603 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | From 08/31/2015To 11/12/2018 | View on Amazon |
| VEMO Fits: 1.8L L4 Turbocharged, 2.5L L5 Turbocharged | V10721602 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 2.5L L5 Turbocharged | V10721604 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Holder | View on Amazon |
| VNE Fits: 2.5L L5 Turbocharged | 700035 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Rain Sensor parts for the 2018 Audi TT come from 2 brands — VEMO and VNE.
This group includes VEMO V10721603, VEMO V10721602 and VEMO V10721604 and the remaining parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular Fits: 2.5L L5 Turbocharged | 30236N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| BOSCH Fits: 2.5L L5 Turbocharged | SR6601N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Fits: 2.5L L5 Turbocharged | 19630 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| REMY Fits: 2.5L L5 Turbocharged | 16412 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| TERREPOWER Fits: 2.5L L5 Turbocharged | 52186 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
5 Starter Motor parts for the 2018 Audi TT come from 5 brands — WAI GLOBAL, BOSCH, PURE ENERGY and 2 other brands. The "Popular" part is WAI GLOBAL 30236N.
The New section lists 2 options from WAI GLOBAL and BOSCH — brand-new units rather than rebuilt ones. WAI GLOBAL 30236N is listed in this group.
The Remanufactured section lists 3 options from PURE ENERGY, REMY and TERREPOWER — factory-rebuilt units with new wear components. PURE ENERGY 19630 is listed in this group.
Part numbers include WAI GLOBAL 30236N, BOSCH SR6601N and PURE ENERGY 19630, among others listed above.
Buying Electrical Parts for a 2018 Audi TT
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 TT?
Our catalog currently lists 57 electrical parts for the 2018 Audi TT across 6 subcategories and 21 brands, covering all 3 engine options (1.8L L4 Turbocharged, 2.0L L4 Turbocharged and 2.5L L5 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2018 Audi TT 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 TT?
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 TT 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 TT?
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 TT
Electrical Parts for Other Audi TT Years
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