Toyota Auris Alternator: Specs, Fitment & Common Faults
On the Auris, a genuinely useful, free diagnostic test reveals whether a whine is genuinely a bearing fault, not the alternator.
Illustration for editorial purposes
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OEM Part Number: 27060-0T230 (genuine alternator — confirm via VIN) — aftermarket alternators Denso DAN1094 / AS-PL A6897S
| Alternators (aftermarket) | Denso DAN1094 (100 A, freewheel clutch pulley, 6 ribs, 58 mm, new OE quality); Denso DAN1096 (90 A, freewheel, 6 ribs, 55 mm, new OE quality); Denso DAN1098 (100 A, freewheel, 6 ribs, 55 mm, new OE quality, £6.91 core charge); Denso DAN1420 (100 A, freewheel, 6 ribs, 55 mm, new OE quality); Denso DAN1093 (100 A, 4 ribs, 63 mm, new OE quality); AS-PL A6897S (100 A, freewheel, 7 ribs, 58 mm, new Standard Line, plug PL_1100, OE 104211-3140); AS-PL A3929S (85 A, freewheel, 4 ribs, 52.5 mm, new Standard Line, plug PL_1100, OE FG9T015); AS-PL A3564S (150 A, rigid pulley, 5 ribs, 54 mm, new Standard Line, plug PL_2306, OE TG15C200) |
|---|---|
| Outputs & variants | 90-100 A freewheel 6-rib 55 mm (DAN1096 / DAN1098 / DAN1420) for the 1.33 and 1.6 petrol; 100 A freewheel 6- or 7-rib 58 mm (DAN1094, Denso 104211-3140) for the 1.4 D-4D and 2.0 D-4D; 100 A 4-rib 63 mm (DAN1093) is the earlier 1.8 hybrid-related pattern; 150 A rigid 5-rib (TG15C200) for the 2.0 D-4D with heavy electrical load |
| Genuine (OE) numbers quoted | 104211-3140 (AS-PL A6897S); FG9T015 (AS-PL A3929S); TG15C200 (AS-PL A3564S); DAN1093 (AS-PL A6250 Denso) |
| Fitment notes | the 1.8 Hybrid has no conventional alternator and uses a DC-DC converter instead; Walker WAL01471 is a reman exchange with a £50.24 core charge. |
A Genuinely Useful, Free Diagnostic Test Worth Trying — Toyota Auris Alternator
If you're hearing a whine or grinding noise that might be the alternator, this is genuinely worth trying before condemning the part: with the engine idling, listen to the noise, then progressively add electrical load — headlights, heated rear window, air conditioning. A genuine bearing fault typically gets louder as load increases. It's also worth listening for whether the noise briefly disappears then returns a second or two after decelerating from higher revs — this pattern is a fairly reliable sign of genuine bearing wear.
It's also worth knowing that a breakdown recovery call-out for alternator failure, particularly away from home, can come with a real premium attached.
Toyota Auris Alternator: Often Blamed on the Battery Instead
Early on, a weak Toyota Auris battery and a dying alternator look almost identical — dim lights, sluggish starts, a car that won't hold its charge — which is exactly why so many people fit a new battery and end up back at the garage weeks later, the actual fault still unaddressed.
Toyota Auris Alternator: Watch: Replacing It
Auris generation not stated in title; verify it is the E180 before embedding
Toyota Auris Alternator: What It Does
On the Toyota Auris, while the engine runs, the alternator generates the electricity that charges the battery and powers the car's electrical systems directly. With a healthy alternator, the battery's real job becomes starting the engine and covering brief demand spikes, rather than running the electronics on its own.
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Toyota Auris Alternator: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Alternator Guide for symptoms to watch for (plus a genuinely useful two-minute test to confirm it's not the battery instead), confirming the right amperage and fitment against your VIN, and which brands are worth trusting.
More Toyota Alternator
The same part, covered across other Toyota models.