2012 Lexus RX Hybrid: common problems

Owners of the 2012 Lexus RX Hybrid filed 3 complaints with NHTSA, most often about service brakes and electrical system. Details by component below, with sources.

Key figures

Owner complaints: 3

What fails most often

1 Service brakes 67% of all complaints
2 Electrical system 33% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Service brakes: 2 complaints (67% of all).
Electrical system: 1 complaints (33% of all).

Symptoms owners describe

How many of the 3 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

rust, corrosion1 · 33%
warning lights, check engine1 · 33%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Service brakes	2	0	0
Electrical system	1	0	0
Other	1	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

The contact stated while driving 30 MPH, several unknown warning lights illuminated with an audible beeping sound. A message appeared on the instrument panel to check the ABS system. The contact pulled over and waited a few minutes to check the brakes.
Service brakes · 2021-11-12 · NHTSA complaint #11440243
Tl* the contact owns a 2012 lexus rx450 hybrid. While driving various speeds, the contact heard a strange and constant buzzing noise throughout the vehicle. The contact stated that she believed her ex-boyfriend hacked into her vehicle.
Electrical system · 2019-09-09 · NHTSA complaint #11254283
My hybrid battery is leaking acid on the bottom of the vehicle and causes corrosion.
Service brakes · 2018-06-18 · NHTSA complaint #11102265

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20181
20191
20211

Comparison

By complaint count this model year ranks 17,150 of 36,656 model years in the NHTSA data (top 47% most complained about).

On average one model year of the RX Hybrid has 16 complaints (22 years in the data). This year has 3, below average.

What to check before buying

Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.

Other years of this model

Questions and answers

What are the most common problems with the 2012 Lexus RX Hybrid?

Owner complaints to NHTSA most often mention: service brakes, electrical system. Total complaints: 3. The most frequent symptoms in complaint texts: rust, corrosion (33%), warning lights, check engine (33%).

How many service bulletins (TSB) were issued for the 2012 Lexus RX Hybrid?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2012 Lexus RX Hybrid from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2012 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.