Audi TT MK2 Interior Auto-Dimming Rearview Mirror 8J0857511 - Used Original Parts
RM 350
Condition: Used (Original)Description
Product Title
Audi TT MK2 Interior Auto-Dimming Rearview Mirror 8J0857511 - Used Original Parts
Diagnosis and Common Symptoms
The Audi TT MK2 (8J chassis) auto-dimming mirror relies on an electrochromic gel layer sandwiched between glass panes, controlled by a photocell sensor on the mirror housing itself. Common failure symptoms include the mirror glass staying permanently dark or tinted regardless of headlight glare behind, or conversely failing to dim at all even under strong rear light exposure. Some units develop a cloudy patch, dark spotting, or a "burnt" ring pattern in the glass caused by gel degradation or moisture ingress at the seal edges. On TT MK2 models fitted with compass/HomeLink function, drivers may also notice the compass display flickering, freezing, or showing no reading at all. Electrical faults can present as no power to the mirror (blank, no auto-dim activation), often traced to the harness connector at the mirror base or a failed dimming circuit board rather than the glass itself. There is no dedicated fault code stored in the central electronics for this component on most 8J variants, so diagnosis is largely visual and functional rather than via VCDS.
Introduction
This is a Genuine Used Audi TT MK2 (8J) auto-dimming rearview mirror, removed from a donor vehicle during dismantling and fully Tested Working prior to listing. The electrochromic dimming function, mounting bracket, and wiring pigtail have all been checked for correct operation before sale. Sourcing a Genuine Used unit avoids the inconsistent dimming response and premature glass clouding often seen in cheap aftermarket replacements. Every mirror is inspected under load to confirm the auto-dim sensor and glass activate correctly before it leaves our workshop.
Product Details
- Brand: Audi
- Model Compatibility: Audi TT MK2 (8J), 2006-2014
- Part Name: Interior Auto-Dimming Rearview Mirror
- Part Number: 8J0857511
- Condition: Genuine Used (Tested Working)
- Notes: Auto-dimming function and mounting bracket tested prior to listing; confirm sub-variant (with/without compass or HomeLink) matches your original mirror before ordering
Frequently Asked Questions
Q: How do I confirm this 8J0857511 mirror matches my Audi TT MK2 exactly? A: The part number 8J0857511 is printed on a sticker on the mirror mount or wiring connector base. Match this against your original mirror's number, or check whether your existing unit has compass/HomeLink buttons, as sub-variants under this base part number can differ in added functions even though the mounting and dimming mechanism are identical.
Q: Does the auto-dimming mirror need coding or programming after installation on the TT MK2? A: No. The 8J0857511 mirror operates independently through its onboard photocell sensor and does not require VCDS coding or adaptation. It is a plug-and-play swap using the factory harness connector behind the mirror base.
Q: What symptoms indicate the auto-dim function is failing before complete failure? A: Early warning signs include delayed dimming response to headlight glare, the glass dimming unevenly across the surface, or intermittent flickering between clear and tinted states. These point to gel degradation inside the mirror glass rather than a wiring fault.
Q: Why choose a used 8J0857511 mirror instead of a new aftermarket unit for the TT MK2? A: Genuine used mirrors retain the correct Audi-spec electrochromic response and OE-matched glass tint, which aftermarket copies frequently fail to replicate accurately. Since this component rarely fails outright and mainly suffers cosmetic gel aging, a tested Genuine Used unit offers reliable function at a fraction of new dealer pricing.
Q: Will this mirror fit if my TT MK2 has HomeLink or a compass display built in? A: Only if the donor unit shares the same features. Confirm with us whether the specific mirror in stock includes compass/HomeLink wiring before purchase, as the base bracket fits all 8J variants but the internal electronics differ between basic and equipped versions.
Why Choose Us?
- Verified functionality
- Actual photos/videos provided
- 30-day exchange warranty
- Tested under simulated glare conditions to confirm consistent electrochromic dimming response before dispatch
Shipping
Location: Kuala Lumpur, Malaysia Shipping: West Malaysia RM50 (Estimate) / East Malaysia RM80 (Estimate) Delivery: 1-2 working days Packaging: Secure anti-static packaging, heavy-duty shock absorption. (We send actual photos/videos of the unit and packaging before shipping)
Warranty and Return Policy
- 30-day exchange warranty from the date of receipt.
- Proof of professional installation by a qualified workshop is required for warranty claims.
- No returns if the item is opened, modified, tampered with, or damaged due to incorrect electrical wiring.
- Exchange only for confirmed internal electronic defects.
How to Order
- WhatsApp us to confirm compatibility with your specific VIN.
- Send your chassis number or a clear photo of your old unit label.
- Confirm order details and stock availability.
- Receive actual product photos and diagnostic test confirmation.
- Make payment via bank transfer.
- Item is shipped immediately with tracking details provided.
Contact Us
Ready to order or have questions? Tap the WhatsApp button to chat with our team directly.
Price Notice
Price is estimated only. Actual price depends on current stock levels, specific part number revisions, and unit condition. Please WhatsApp us for a formal quote.
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