Safety first on a busy highway
I-35 through Austin — especially between Ben White and US-183 — has narrow shoulders and heavy traffic. If possible, take the next exit to a frontage road or parking lot rather than stopping on the main lanes.
What not to do
Don't open the radiator cap while hot — pressurized coolant can cause severe burns. Don't keep driving with the gauge in the red; that risks a blown head gasket.
Getting help fast
Our mobile mechanics respond 24/7 to I-35 frontage roads, MoPac, US-183, SH-71 and SH-130. We can often replace a hose, fan relay or thermostat right there.
Get it fixed by a mobile mechanic
Matt Mobile Mechanic of Austin handles this at your home anywhere around Austin:
Popular areas: Austin, Round Rock, Pflugerville, Cedar Park, Leander, Georgetown
Frequently Asked Questions
Should I call 911?
Only if you're in danger or blocking traffic.
Can I add coolant on the roadside?
Yes, once the engine has cooled.
Is towing required?
Not always — many cooling repairs can be done on-site.