Rear Hard Brake Line Leak?

2016 Tundra 4x4, 30,000 miles. Little baffled by this one. I'm a mechanical guy and don't want to call this a brake leak but I think it has got to be brake leak in the hard line right behind the leaf spring shackles, drivers side. Odd thing is however, it's on the front of the axle too. Perhaps a leaking shock? Shock is clean from what I can tell. I pulled the brake line retainer clip off and wiped it all down last night. Going to monitor it. Reservoir level is fine. Braking action has been fine and no warning lights. Only modification to this area are my Firestone air bags. I towed a 7K trailer about a month ago 2,000 miles on vacation. Beyond that, got the brakes a little hot coming down one of three Colorado mountain passes but I don't think the two can be related. Thoughts before I take it to the dealer? Only maintenance that has been done is by my Toyota dealer since I picked up this truck at 20,000 miles. Oil changes and tire rotations.

 

Brake line or Could be rearend leaking from a cracked weld, I had an old for that was leaking out of a weld on the rear end.

But My bet isthe brake line.

Clean that spot well and lay under there and have someone pump the brakes a bunch and see what happens. Wear safety glasses just to be safe.

 

Yah, it was late so I just wiped it down. I'll degrease tonight and may shoot some talcum powder in that area. That's how I usually track down leak sources. Well, it's under warranty so that's good. I just like to diagnose myself first before I take it to a dealership. This is the first vehicle I've actually not done my own routine maintenance on. Still getting used to that.

I'll be honest, I'm also slightly concerned they'll blame my Firestone Airbags somehow. I don't see how they could cause any damage. The hard brake line is not bent or twisted anywhere if they tried to claim they made contact.

 

See if it’s oily under the shock boots.

 

Good call.

 

Thats how I’ve heard you find the wet spot.

 

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