# After-Hours Diagnostics: Drop Tonight, Diagnose at Opening

> Leave your car in our after-hours key drop in Upland so diagnosis starts the moment we open. What to write on your note and how the call works.

Source: https://route66autorepairshop.com/auto-repair-services/after-hours-diagnostics  
Updated: 2026-09-17  
Business: Route 66 Auto Repair, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699  
Hours: Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed

**TLDR:** Leave the car with the **after-hours key drop**. Diagnosis starts **when we open**, after we call you to state the **diagnostic fee**.

After-hours diagnostics at Route 66 Auto Repair in Upland means you leave your car tonight using our after-hours key drop, and a technician begins diagnosis when the shop opens. We do not have technicians working overnight. The benefit is a head start: your car is first in line in the morning instead of waiting for you to arrive.

## How does after-hours drop-off work?

Park in our lot at 1775 W Foothill Blvd, lock the car and put the key in the after-hours key drop with a note. When we open, Monday to Friday at 8 AM or Saturday at 8 AM, the service writer reads your note and calls you. Nothing is tested until you hear the diagnostic fee and agree.

This works well for commuters who cannot miss work, for cars that arrive on a tow truck after hours, and for symptoms that show up on a cold start, since the car will be cold in the morning.

## What should your note say?

- Your name and the best phone number to reach you in the morning
- Year, make and model of the vehicle
- What it does: noise, warning light, leak, no-start, and when it happens
- Anything recently repaired
- Whether you have AAA, so we can apply the member discount

## Our after-hours diagnostic process

1. **Overnight drop:** You leave the car and key with a detailed note.
2. **Opening call:** At opening, we call to confirm the concern and state the diagnostic fee.
3. **Morning testing:** With your approval, the technician scans, tests and road-tests as needed.
4. **Written findings:** You receive a written estimate with need-now and need-later labels.

## What's included with after-hours diagnostics

- After-hours key drop
- Call at opening before testing
- Cold-start check when the symptom calls for it
- Scan and system tests
- Written estimate with urgency labels

## Is a night drop the right move?

**Need now:**
- Car unsafe to drive tomorrow: tow it in tonight
- No-start that blocks your morning

**Need later:**
- A symptom you can drive with until a daytime appointment
- Routine maintenance you can schedule

## How pricing and timing work

The diagnostic fee is stated at the opening call, and it applies to approved related repair. Early testing often means repair can start the same day when the board allows. Our [check engine light diagnostics](https://route66autorepairshop.com/engine-services/check-engine-light-diagnostics) and [diagnostics and inspections](https://route66autorepairshop.com/diagnostics-and-inspections) pages explain the tests in detail.

## Aftercare

Pickup happens during open hours. If a symptom was intermittent, tell us if it returns after the repair; comebacks go to the front of the line.

## Frequently asked questions

### Do you work on cars overnight?

No. There are no overnight technicians. The key drop lets you leave the car so diagnosis starts when the shop opens.

### Will you test my car before talking to me?

No. We call first to confirm the concern and state the diagnostic fee. Testing begins only after you agree.

### Can a tow truck use the key drop?

Yes. Ask the driver to leave the key in the after-hours key drop, and call us with your name, number and what happened. See [emergency auto repair](https://route66autorepairshop.com/auto-repair-services/emergency-auto-repair) for roadside steps.

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Call (909) 608-7699 or visit https://route66autorepairshop.com/contact for a written estimate.