The 2015 Audi TT has 80 electrical parts with verified fitment on this page — 15 part types and 28 brands, covering the 2.0L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2015 Audi TT, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 44 parts of the 80 listed are Starter Motor (18 parts), Battery (15 parts) and Alternator / Generator (11 parts). The other 12 part types cover the remaining 36 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2015 Audi TT.
The most listed brands for 2015 Audi TT electrical parts are BOSCH (16 parts), WELLS (6 parts) and REMY (5 parts), plus 25 more brands. Quality grades include Remanufactured, AGM and New.
15 parts on this 2015 Audi TT page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including VALEO 439852 (Alternator / Generator) and GATES 37013P (Alternator / Generator Pulley). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO Popular | 439852 | 🇺🇸 US 🇨🇦 CA | TTS Quattro140 Amps | View on Amazon |
| WAI GLOBAL Popular | 20303N | 🇺🇸 US 🇨🇦 CA | TT QuattroValeo 140 Amp | View on Amazon |
| BOSCH | AL0947N | 🇺🇸 US 🇨🇦 CA | Does Not Include Pulley | View on Amazon |
| WAI GLOBAL | 11721N | 🇺🇸 US 🇨🇦 CA | TTS QuattroBosch Unit | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REMY Popular | 11415 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| BOSCH | AL9385X | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 11703 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 10201 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 11155 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 11703 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 42051 | 🇺🇸 US 🇨🇦 CA | Remanufactured | 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.
11 Alternator / Generator parts are listed for the 2015 Audi TT, from WAI GLOBAL, BOSCH, REMY and 3 other brands. VALEO 439852 carries the "Popular" badge.
In the New grade, WAI GLOBAL, VALEO and BOSCH supply 4 parts: brand-new units rather than rebuilt ones. A representative part number is VALEO 439852.
In the Remanufactured grade, REMY, PURE ENERGY, TERREPOWER and 1 other brand supply 7 parts: factory-rebuilt units with new wear components. A representative part number is REMY 11415.
Alternator / Generator Diode Rectifier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1986AE0270 | 🇺🇸 US 🇨🇦 CA | RECTIFIER | View on Amazon |
This table covers the rectifier diode packs in the alternator.
One part is listed for the 2015 Audi TT — BOSCH 1986AE0270.
Alternator / Generator End Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1986AE1308 | 🇺🇸 US 🇨🇦 CA | Fits OuterConvertible | View on Amazon |
This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
This group shows a single part: BOSCH 1986AE1308.
Alternator / Generator Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 37013P | 🇺🇸 US 🇨🇦 CA | Decoupler Pulley | View on Amazon |
| ÜRO PARTS Popular | 06B903119B | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
| CONTINENTAL | 49703 | 🇺🇸 US 🇨🇦 CA | Clutch PulleySteel | View on Amazon |
| LITENS | 930003A | 🇺🇸 US 🇨🇦 CA | Clutch Pulley | View on Amazon |
| LITENS | 930013A | 🇺🇸 US 🇨🇦 CA | Clutch Pulley | View on Amazon |
| VEMO | V10230004 | 🇺🇸 US 🇨🇦 CA | Clutch Pulley | View on Amazon |
| WELLS | 2D5002 | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.
7 Alternator / Generator Pulley parts for the 2015 Audi TT come from 6 brands — LITENS, GATES, ÜRO PARTS and 3 other brands. The "Popular" part is GATES 37013P.
Part numbers include GATES 37013P, ÜRO PARTS 06B903119B and CONTINENTAL 49703, among others listed above.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular | 9A94R | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP Popular | P94RAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 94R | View on Amazon |
| LUCAS Popular | LBAGM001A | 🇺🇸 US 🇨🇦 CA | BCI Group: 47AGM | View on Amazon |
| ACDELCO | 94RAGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| ACDELCO | 94RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 94R | View on Amazon |
| BOSCH | S6587B | 🇺🇸 US 🇨🇦 CA | AGMAGM | View on Amazon |
| DEKA | 9A47 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE | MXH5L247 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| EXIDE | MXH7L494R | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 94R (H7) | View on Amazon |
| FVP | P47AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 47 | View on Amazon |
| LUCAS | LBAGM006A | 🇺🇸 US 🇨🇦 CA | BCI Group: 49AGM | View on Amazon |
| P1MAX | PMAGMH547 | 🇺🇸 US 🇨🇦 CA | BCI Group 47 AGM680 CCA | View on Amazon |
| P1MAX | PMAGMH794R | 🇺🇸 US 🇨🇦 CA | BCI Group 94R AGM800 CCA | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | FT61047 | 🇺🇸 US 🇨🇦 CA | BCI Group 47(Length X Width X Height) 9.49 In x 6.89 In x 7.48 In | View on Amazon |
| FULLRIVER | FT85094R | 🇺🇸 US 🇨🇦 CA | BCI Group 94R(Length X Width X Height) 12.36 In x 6.85 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 for the 2015 Audi TT come from 8 brands — DEKA, FVP, LUCAS and 5 other brands. The "Popular" part is DEKA 9A94R.
In the AGM (Extended Life) grade, DEKA, FVP, LUCAS and 4 other brands supply 13 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A94R.
In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 2 parts: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT61047.
Battery Current Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 010942901 | 🇺🇸 US 🇨🇦 CA | BoltedIntelligent Battery Sensor | View on Amazon |
| WELLS | 5S16152 | 🇺🇸 US 🇨🇦 CA | Connector Gender: Female | View on Amazon |
| WELLS | 5S16151 | 🇺🇸 US 🇨🇦 CA | Negative CircuitPlastic Base | View on Amazon |
This table covers the Battery Current 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 Battery Current Sensor parts are listed for the 2015 Audi TT, from WELLS and HELLA.
This group includes HELLA 010942901, WELLS 5S16152 and WELLS 5S16151.
HID Lighting Ballast
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | LRB370 | 🇺🇸 US 🇨🇦 CA | Xenon | View on Amazon |
| WELLS | 6R1085 | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
This table covers the HID Lighting ballasts.
2 HID Lighting Ballast parts are listed for the 2015 Audi TT, from MARELLI and WELLS.
This group includes MARELLI LRB370 and WELLS 6R1085.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | LRB320 | 🇺🇸 US 🇨🇦 CA | Xenon | View on Amazon |
| MARELLI | LRB450 | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
| WELLS | 6H1507 | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
This table covers the modules that control the exterior lighting.
3 Lighting Control Module (LCM) parts are listed for the 2015 Audi TT, from MARELLI and WELLS.
This group includes MARELLI LRB320, MARELLI LRB450 and WELLS 6H1507.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO Popular | 890000 | 🇺🇸 US 🇨🇦 CA | Park Sensor | View on Amazon |
| HELLA | 358141081 | 🇺🇸 US 🇨🇦 CA | Angled3-Pin Connector | View on Amazon |
| ÜRO PARTS | 1S0919275D | 🇺🇸 US 🇨🇦 CA | RearPaint as required | View on Amazon |
| VALEO | 890002 | 🇺🇸 US 🇨🇦 CA | Park Sensor | View on Amazon |
| VEMO | V107240817 | 🇺🇸 US 🇨🇦 CA | Includes: Sensors, Harness Repair Set and Installation Hardware | 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 are listed for the 2015 Audi TT, from VALEO, HELLA, ÜRO PARTS and 1 other brand. VALEO 890000 carries the "Popular" badge.
This group includes VALEO 890000, HELLA 358141081 and ÜRO PARTS 1S0919275D and the remaining parts above.
Speed Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular | SC762 | 🇺🇸 US 🇨🇦 CA | Vehicle Speed | View on Amazon |
| HOLSTEIN | 2VSS0382 | 🇺🇸 US 🇨🇦 CA | TTS QuattroVehicle Speed | View on Amazon |
| VEMO | V10721277 | 🇺🇸 US 🇨🇦 CA | Plug (Connector): 4 Pins | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular | 5S12520 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| DELPHI | SS12516 | 🇺🇸 US | Transmission Speed / Temperature Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS | SC602 | 🇺🇸 US 🇨🇦 CA | Color/Finish: Black | View on Amazon |
This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor.
6 Speed Sensor parts for the 2015 Audi TT come from 6 brands — ULTRA-POWER, HOLSTEIN, VEMO and 3 other brands. The "Popular" part is ULTRA-POWER SC762.
The Economy section lists 3 options from ULTRA-POWER, HOLSTEIN and VEMO — the catalog's value-priced group. ULTRA-POWER SC762 is listed in this group.
In the Standard Replacement grade, WELLS, DELPHI and STANDARD MOTOR PRODUCTS supply 3 parts: built to original-equipment specification. A representative part number is WELLS 5S12520.
Listed part numbers: ULTRA-POWER SC762, HOLSTEIN 2VSS0382 and VEMO V10721277, plus the other parts above.
Starter Armature
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1986SE1584 | 🇺🇸 US 🇨🇦 CA | ARMATURE | View on Amazon |
| BOSCH | 1986SE1877 | 🇺🇸 US 🇨🇦 CA | ARMATURE | View on Amazon |
This table covers the Starter armatures.
BOSCH supplies both parts for the 2015 Audi TT.
This group includes BOSCH 1986SE1584 and BOSCH 1986SE1877.
Starter Brush Holder Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1004336506 | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
| BOSCH | 1986SE1602 | 🇺🇸 US 🇨🇦 CA | TTS Quattro | View on Amazon |
This table covers the Starter Brush Holder assemblies.
2 Starter Brush Holder Assembly parts for the 2015 Audi TT come from BOSCH.
Part numbers include BOSCH 1004336506 and BOSCH 1986SE1602.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Popular | 119215 | 🇺🇸 US 🇨🇦 CA | TTS Quattro | View on Amazon |
| TYC Popular | 117970 | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
| VALEO Popular | 438432 | 🇺🇸 US 🇨🇦 CA | Core-Flex Starter | View on Amazon |
| BOSCH | SR0427N | 🇺🇸 US 🇨🇦 CA | TTS Quattro | View on Amazon |
| BOSCH | SR0840N | 🇺🇸 US 🇨🇦 CA | TT Quattro | View on Amazon |
| REMY | 99063 | 🇺🇸 US 🇨🇦 CA | TTS Quattro | View on Amazon |
| TERREPOWER | N19215 | 🇺🇸 US 🇨🇦 CA | TTS Quattro | View on Amazon |
| WAI GLOBAL | 19214N | 🇺🇸 US 🇨🇦 CA | TT Quattro11T/CCW | View on Amazon |
| WAI GLOBAL | 19215N | 🇺🇸 US 🇨🇦 CA | TTS QuattroBosch Unit | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular | 19214 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| BOSCH | SR0427X | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| BOSCH | SR0840X | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| DENSO | 2806204 | 🇺🇸 US 🇨🇦 CA | Reman | View on Amazon |
| PURE ENERGY | 19490 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 16200 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 16199 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 19215 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 19214 | 🇺🇸 US 🇨🇦 CA | 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.
18 Starter Motor parts are listed for the 2015 Audi TT, from BOSCH, REMY, TERREPOWER and 5 other brands. TYC 119215 carries the "Popular" badge.
New: 9 parts, from TYC, BOSCH, WAI GLOBAL and 3 other brands. A representative part number is TYC 119215.
Remanufactured: 9 parts, from PURE ENERGY, BOSCH, REMY and 2 other brands. A representative part number is PURE ENERGY 19214.
Starter Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1986SE1696 | 🇺🇸 US 🇨🇦 CA | SOLENOID | View on Amazon |
| BOSCH | 1986SE1698 | 🇺🇸 US 🇨🇦 CA | SOLENOID | View on Amazon |
This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
BOSCH supplies both parts for the 2015 Audi TT.
Listed part numbers: BOSCH 1986SE1696 and BOSCH 1986SE1698.
Voltage Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI | ALR0400HU | 🇺🇸 US 🇨🇦 CA | Hueco | View on Amazon |
| BOSCH | 1986AE0155 | 🇺🇸 US 🇨🇦 CA | Fits CoupeTTS Quattro | View on Amazon |
This table covers the regulators that control alternator output voltage.
2 Voltage Regulator parts for the 2015 Audi TT come from 2 brands — ASTEMO / HITACHI and BOSCH.
Listed part numbers: ASTEMO / HITACHI ALR0400HU and BOSCH 1986AE0155.
Buying Electrical Parts for a 2015 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.
- Confirm you have the 2.0L L4 Turbocharged 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, 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: Starter Motor and Battery .
Frequently Asked Questions
How many electrical parts fit the 2015 Audi TT?
Our catalog currently lists 80 electrical parts for the 2015 Audi TT across 15 subcategories and 28 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2015 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 2015 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 2015 Audi TT?
Every part on this page is matched to the 2.0L L4 Turbocharged engine. 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 2015 Audi TT
Electrical Parts for Other Audi TT Years
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