Services — Mobile repair services

Mobile radiator repair

An overheating engine is a car you shouldn't drive to a shop. Mobile radiator repair brings the mechanic to it: pressure test, find the leak, replace the radiator, thermostat, hose or fan, and refill the system where the car sits.

Find your city→ Questions
Coverage250 Cities
AvailabilitySame Day
PricingUpfront Quote

01 — Overview

Cooling system repair that comes to the car

The cooling system has one job: keep the engine at operating temperature. When a radiator springs a leak, a thermostat sticks or a hose lets go, the temperature gauge climbs, and every mile you drive it hot risks a head gasket or a warped head. That's why cooling faults are a mobile mechanic's problem, not a drive-it-in problem.

Mobile radiator repair covers the whole system: the radiator itself, the thermostat, upper and lower hoses, the cooling fans, the expansion tank and cap, and the water pump. The mechanic pressure tests the system to find the leak, replaces the failed part and fills and bleeds the system properly so there are no air pockets.

Mobile Auto Repair has a local mobile mechanic in 250 cities. If the gauge is climbing, pull over and reach out through your city page.

02 — Diagnosis

Finding the leak

Coolant leaks hide. A pressure test puts the system under operating pressure with the engine off so the leak shows itself. The usual suspects:

  • Radiator: cracked plastic end tanks on most modern radiators, or corrosion in the core
  • Hoses: swelling, cracking or a loose clamp, especially the lower hose that's hard to see
  • Thermostat housing: plastic housings crack and gaskets fail
  • Water pump: a weep hole dripping coolant means the seal is gone
  • Expansion tank and cap: a tank seam split or a cap that won't hold pressure
  • Heater core: a sweet smell inside the car and a foggy windshield

03 — Repairs

What mobile radiator repair includes

Radiator replacement is the headline job. On most cars it's a matter of draining the system, disconnecting the hoses and transmission cooler lines where fitted, unbolting the fan shroud and lifting the radiator out. The new one goes in, the system is filled with the correct coolant type and bled to remove air. Mixing coolant types causes corrosion, so the mechanic uses what your manufacturer specifies.

Thermostats, hoses, fans and expansion tanks are smaller jobs done the same way. If the fan isn't coming on, that's often why the car overheats in traffic but not on the highway; the mechanic checks the fan motor, relay and temperature sensor before replacing anything. A weak AC at idle is sometimes the first symptom of a fan problem.

04 — Overheating

What to do if your car is overheating right now

Pull over, turn the engine off and let it cool. Don't open the radiator cap while it's hot; the system is under pressure and will spray scalding coolant. Turning the heater on full blast can pull some heat off the engine while you get to a safe stop, but it's not a fix.

Then reach out. A roadside mechanic can often fix a hose, a thermostat or a fan where the car stopped. Driving an overheating engine even a few miles to a shop can turn a hose replacement into a head gasket job, which is exactly why mobile radiator repair exists.

05 — When to reach out

Signs you need cooling system repair

6 signs
Temperature gauge risingAbove the midpoint, or a warning light. Pull over and reach out before it gets to the red.
Coolant on the groundGreen, orange, pink or blue puddle under the car. The leak is somewhere; the pressure test finds it.
Sweet smellCoolant has a distinct sweet smell. Outside the car means a leak under the hood; inside means the heater core.
Low coolant lightIf you're topping it off regularly, it's going somewhere. Find out where before it runs dry.
No heatCold air from the heater on a cold day often means low coolant or a stuck thermostat.
Overheats in traffic onlyFine on the highway, hot at a stop. That's a fan problem, and it's an on-site fix.

06 — Cost

What mobile radiator repair costs

Parts plus labor, quoted after the pressure test identifies the failed component. A hose or thermostat is a small job; a radiator is a bigger one, with the part price depending on the vehicle. Coolant is included. No tow, no shop overhead. The mobile mechanic cost page explains how quotes work.

Fixing a leaking hose today is a fraction of the cost of the head gasket you'll need if you drive it hot for a week.

PartsQuality parts from national suppliers, priced the same as a shop pays.
LaborQuoted for the job, not for the hours you'd spend in a waiting room.
Tow$0. The mechanic comes to the car.
SurprisesNone. Changes get your approval first.

07 — Process

How mobile radiator repair works

Three steps · No shop visit
01

Find your city

Pick your city from 250 across the U.S. and you'll land on your local mobile mechanic's page.

02

Get a quote

Describe the symptom, your vehicle and where it's parked. You get an upfront price and an arrival window, often the same day.

03

Fixed where it sits

The mechanic arrives with the tools and parts, does the work on-site and you're back on the road without a tow or a shop visit.

08 — Near you

Mobile radiator repair by city

All 250 cities →

09 — Questions

Mobile radiator repair FAQ

Straight answers about mobile radiator repair: what it covers, what it costs and how fast a mobile mechanic can get to you.

Q.01Can a mobile mechanic replace a radiator in my driveway?

Yes. Radiator replacement needs hand tools, a drain pan and the right coolant, all of which come in the van. It's a routine on-site job on most vehicles.

Q.02Can you fix an overheating car on the roadside?

Often. Hoses, thermostats, fans and caps are quick roadside repairs if the car is in a safe spot. If the radiator itself has failed, the mechanic will pick one up and replace it where the car is.

Q.03How long does mobile radiator repair take?

A hose or thermostat is about an hour. A radiator replacement is two to three hours including the fill and bleed.

Q.04Do you use the right coolant for my car?

Yes. Coolant types aren't interchangeable, and the mechanic brings the type your manufacturer specifies.

Ready when you are

Running hot? Don't drive it. Reach out.

Find your city and reach out to the mechanic. They'll pressure test the system where the car is and fix the leak on-site.

Find your city→