Rear Seat Position Not Calibrated
The TESLA-VCRIGHT_a252 (VCRIGHT) EV fault code means: Rear Seat Position Not Calibrated. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- DIY: $0-$80 (12V battery replacement or connector cleaning). Pro window motor swap: $150-$350 parts and labor. If VCRIGHT module or harness replacement is needed: $400-$900 at an independent shop. Tesla service center labor rates will push the high end higher.
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Common Symptoms
- Alert VCRIGHT_a252 shown on the touchscreen
- The vehicle may log the alert without any change the driver notices
Probable Causes (Ranked by Likelihood)
- The vehicle reported VCRIGHT_a252. Tesla's firmware identifies this alert as "VCRIGHT_a252_seatUncalBack" — a seat position sensor that has lost its calibration. High
Frequently Asked Questions
What does VCRIGHT_a252 mean?
Rear Seat Position Not Calibrated. Tesla's firmware identifies it as "VCRIGHT_a252_seatUncalBack".
Can a generic OBD2 scanner read this?
No. Tesla alerts are a manufacturer-specific system and appear in no SAE standard, so a generic OBD-II scan tool cannot read or clear them. The alert text on the touchscreen and the Tesla app are the authoritative sources.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
Read the alert text on the touchscreen exactly as shown — Tesla's own wording is more specific than any third-party list, this page included.
Check for a Tesla service bulletin or a pending software update; a number of alerts clear on their own after an over-the-air update.
If the alert persists, request service through the Tesla app. Tesla alerts are not standard OBD-II codes and a generic scan tool will not read or clear them.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- Tesla alert dictionary (canonical firmware alert identifiers)community-maintained dictionary, not an official manufacturer document
Commonly Affected Vehicles
- Tesla Model 3 (RWD, Long Range AWD, Performance) -- high frequency after 12V battery age or OTA update
- Tesla Model Y (LR AWD, Performance) -- flex harness wear reported on high-mileage units
- Tesla Model S (LR, Plaid) -- falcon-wing adjacent door electronics share similar CAN topology
- Tesla Model X (LR, Plaid) -- falcon-wing door actuator faults can present alongside this code
- Tesla Cybertruck (RWD, AWD, Cyberbeast) -- early production units with window calibration issues
- Tesla Model 3 (Long Range AWD) -- post-collision repair units where door harness reinstallation was incomplete
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