Symptom Troubleshooting Index

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.

Most problems in the unit are to be diagnosed by identifying noises from the gears or bearings.

Be careful during diagnosis not to confuse differential noises with those from other drivetrain components.

PROBABLE CAUSE CHART

Symptom	Probable Cause	Remedy
Will not go into 4WD mode	Fluid level too low Incorrect fluid type	Add fluid Drain and fill the differential with the recommended fluid
Will not return to 2WD mode	Incorrect fluid type	Drain and fill the differential with the recommended fluid
Gear or bearing noises	Fluid level too low Incorrect or worn out fluid Damaged or chipped gears	Add fluid Drain and fill the differential with the recommended fluid Replace the differential carrier assembly
Rear differential overheats	Fluid level too low Incorrect fluid type	Add fluid Drain and fill the differential with the recommended fluid
Rear differential leaks fluid	Fluid level too high Clogged breather hose Worn or damaged oil seal Damaged sealing washer Loose mounting bolts or inadequate sealing	Lower to proper level Clean or replace Replace the oil seal Replace the sealing washer Recheck torque or apply sealant
Rear differential screeches, whines, moans, or squeaks	Fluid level too low Incorrect or worn out fluid Incorrect tire rolling circumference Damaged pump	Add fluid Drain and fill the differential with the recommended fluid Adjust tire pressure or replace tires Replace the torque control differential (TCD) front pump