Are 2012 Toyota Sienna electrical problems common?

NHTSA recorded 29 electrical system complaints for the 2012 Sienna, making up 12% of all complaints filed for that model year.

Is there a recall for the 2012 Toyota Sienna electrical system?

NHTSA lists no related recalls tied to the electrical system complaints for the 2012 Sienna.

At what mileage do 2012 Sienna electrical problems usually occur?

The median mileage at failure reported to NHTSA for electrical system complaints on the 2012 Sienna is 39,910 miles.

Did the 2012 Sienna electrical issues cause any fires or crashes?

NHTSA data shows 2 fires linked to electrical complaints for the 2012 Sienna, with 0 crashes and 0 injuries reported.

How does the 2012 Sienna compare to other years for electrical complaints?

The 2012 Sienna's electrical complaints made up 12% of its total complaints, similar to 2010, 2011, 2013, and 2014, while 2015 saw a higher 21% share.

2012 Toyota Sienna Electrical System Problems

NHTSA lists 29 electrical system complaints for the 2012 Toyota Sienna, 12% of its 247 total complaints that year, with a median failure mileage of 39,910 miles. Two fires were reported and no crashes or injuries. No electrical recalls are tied to this model year.

Electrical System complaints: 29; 12% of 247
Crashes reported: 0
Fires reported: 2
Injuries reported: 0
Median mileage: 39,910 mi
Related recalls: 0

Typical electrical symptoms owners report

Owners describe sudden electrical surges where all dashboard lights flash and the engine shuts off while driving at low speed, sometimes restarting normally afterward.
Some owners report smoke or fire shortly after erratic dashboard flickering, A/C fan fluctuation, and intermittent Bluetooth disconnects.
Several owners note dashboard gauges failing to illuminate during daytime driving, especially on cloudy days, making them hard to read.
One owner reports the vehicle completely losing power after a normal drive, with no response from door locks, radio, or lights for several minutes before it would restart.
A passenger-side headlight was reported to turn off intermittently and only reset when the headlight switch was cycled off and on.
One owner reported rodents chewing through underhood wiring on repeated nights, damaging injector, sensor, and fuel pump wires.

When 2012 Toyota Sienna electrical complaints were filed

First complaint Jul 5, 2012, latest Sep 12, 2025.

29 complaints filed with NHTSA from Jul 2012 to Sep 2025; peak Dec 2012 (2).

Electrical System recalls for the 2012 Toyota Sienna

No safety recalls on record for this model year.

Electrical System complaints by Sienna model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

201021 (12%)
201173 (12%)
201229 (12%)
201322 (12%)
201416 (10%)
201548 (21%)
201612 (16%)
201724 (16%)
20188 (11%)
20196 (13%)
20207 (18%)

Frequently asked questions

Are 2012 Toyota Sienna electrical problems common?: NHTSA recorded 29 electrical system complaints for the 2012 Sienna, making up 12% of all complaints filed for that model year.
Is there a recall for the 2012 Toyota Sienna electrical system?: NHTSA lists no related recalls tied to the electrical system complaints for the 2012 Sienna.
At what mileage do 2012 Sienna electrical problems usually occur?: The median mileage at failure reported to NHTSA for electrical system complaints on the 2012 Sienna is 39,910 miles.
Did the 2012 Sienna electrical issues cause any fires or crashes?: NHTSA data shows 2 fires linked to electrical complaints for the 2012 Sienna, with 0 crashes and 0 injuries reported.
How does the 2012 Sienna compare to other years for electrical complaints?: The 2012 Sienna's electrical complaints made up 12% of its total complaints, similar to 2010, 2011, 2013, and 2014, while 2015 saw a higher 21% share.