C1715 on 2008-2021 Lexus LX (LX570) — Manufacturer-Specific Chassis Code (Nissan: TPMS Transmitter / wheel-end related)
1 vehicles · 1 makes · $2,000-$6,000 repair
How to diagnose and fix C1715: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Lexus LX · 2008–2021
The Active Height Control hydraulic suspension on the LX570 develops leaks in the height control actuators, accumulator, and hydraulic lines. The system uses hydraulic fluid under high pressure to adjust ride height, and seals deteriorate over time causing fluid loss. A complete system failure leaves the vehicle stuck at one height setting and triggers warning lights.
Common Symptoms
- Vehicle sits lower than normal on one or more corners
- AHC warning light illuminated
- Height control switch no longer adjusts ride height
- Hydraulic fluid leak visible under vehicle
- Ride becomes harsh or bouncy
How to Fix
Replace failed AHC components — actuators, accumulator, or hydraulic lines as needed. A complete AHC overhaul runs $3,000-$6,000 at the dealer. Alternatively, convert to a conventional spring suspension using aftermarket kits that eliminate all hydraulic components.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- 49141-60020 genuine Lexus front AHC accumulatorOEM49141-60020
Replace a pressure-test-confirmed failed front accumulator Fitment/availability: Live Add to Cart page explicitly lists 2008-2021 LX570 fitment. The catalog uses this front accumulator on both left and right; confirm VIN and quantity for…
- 49151-60020 genuine Lexus rear AHC accumulatorOEM49151-60020
Replace a pressure-test-confirmed failed rear accumulator Fitment/availability: Live Add to Cart page explicitly lists 2008-2021 LX570 fitment. The catalog uses this rear accumulator on both left and right; confirm VIN and quantity for t…
- 48010-60010 genuine Lexus front-right shock-control valve assemblyOEM48010-60010
Position-specific; confirm VIN and failure before ordering.
- 48020-60010 genuine Lexus front-left shock-control valve assemblyOEM48020-60010
Position-specific; confirm VIN and failure before ordering.
- 48030-60010 genuine Lexus rear-right shock-control valve assemblyOEM48030-60010
Position-specific; confirm VIN and failure before ordering.
- 48040-60010 genuine Lexus rear-left shock-control valve assemblyOEM48040-60010
Position-specific; confirm VIN and failure before ordering.
- 48910-60033 genuine Lexus AHC pump-and-motor assemblyOEM48910-60033 (replaces 48910-60030, 48910-60031 and 48910-600
Replace a pressure- and electrical-test-confirmed failed height-control pump Fitment/availability: Live Add to Cart page explicitly lists 2008-2021 LX570 fitment and supersedes 48910-60030, -60031 and -60032.
- 48940-60020 genuine Lexus No. 1 height-control valve assemblyOEM48940-60020
Confirm VIN, hydraulic diagnosis and all required union seals before ordering.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipBudget for AHC maintenance on any LX570 over 80,000 miles. The system is shared with the Toyota Land Cruiser 200, so LC forums have extensive repair documentation that applies directly.
Sources for this issue (3)
Find C1715 by make
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C1715 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C1715 mean?
C1715 stands for "Manufacturer-Specific Chassis Code (Nissan: TPMS Transmitter / wheel-end related)." C1715 is a manufacturer-specific chassis code whose exact meaning varies by maker; on Nissan/Infiniti applications it is generally associated with a tire pressure monitoring system (TPMS) transmitter fault (commonly cited as the rear-left transmitter). Because this code is not part of the standardized SAE set, the precise definition should be confirmed against the specific vehicle's service information. In general it points to a wheel-end sensor/transmitter communication concern. It is typically a comfort/monitoring issue rather than a driving hazard, though it may leave tire-pressure warnings active.
What are the most common causes of C1715?
The most common causes of C1715 are: Dead or weak TPMS sensor/transmitter battery, Faulty or damaged tire pressure sensor, Sensor not registered/relearned after rotation or replacement, Radio-frequency interference or weak signal reception, TPMS receiver/module or antenna fault, Damaged wiring to the TPMS module. The specific cause varies by vehicle.
How much does it cost to fix C1715?
Repair costs for C1715 range from $2,000 to $6,000, depending on the vehicle and root cause.
Which vehicles are affected by C1715?
Au7o has documented C1715 across 1 vehicle models from 1 manufacturers: Lexus.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.