The DEF tank heater keeps AdBlue liquid in cold temperatures. When it fails the system flags a fault and starts the restart countdown. We diagnose the heater circuit, replace the heater or the sending unit, and clear the countdown for good.
Signs You Need DEF Heater Replacement
If your Sprinter shows any of the following in Orange County traffic or on the freeway, it is time to have this checked:
- DEF or emissions warning with a mileage countdown
- See dealer message on the cluster
- Fault appears in cold weather
- NOx or SCR codes stored
What Our DEF Heater Replacement Includes
- DEF heater circuit test
- Tank heater or header replacement
- AdBlue quality check
- Fault clear and countdown reset
- Verification drive cycle
Ballpark Pricing
Ballpark: $600 to $1,800. Sprinter pricing varies with model year, parts, and condition, so we always confirm a firm price before starting. See our pricing page for more ranges, or call (714) 646-1433 for an exact quote.
Why Orange County Sprinter Owners Trust Us for DEF Heater Replacement
DEF Heater Replacement on a Mercedes Sprinter is not the same as a generic van repair. We diagnose with real Mercedes Xentry equipment, use OEM and OE-quality parts, and fix the root cause so the problem does not come back. Drivers across Anaheim, Irvine, and all of Orange County bring us their diesel, gas, and eSprinter vans because we do the job right the first time and stand behind our work.