Mercedes-Benz G63 AMG Base 2017 Repair Quote Check | Mansfield, Texas Prices

Repair Task	Mechanic Quote	Fair Price Estimate	Fairness
Brake Fluid Replacement	$250+	$160 – $250	🟡
Oil Leak Repairs (Filter Housing & Cam Plug, Clean Residue)	$1,000+	$400 – $800	🔴
EVAP Leak Diagnosis/Repair	$350+	$125 – $250 (diagnosis only; repairs extra after finding cause)	🟡
Left Front TPMS Sensor	$200+	$65 – $140 (parts & labor)	🔴
Starter Battery Replacement	$600+	$350 – $500	🔴
Sunroof/Overhead Console Electrical Diagnosis	$200+	$120 – $200 (diagnosis only; repairs extra)	🟡
A/C Air Quality Sensor Replacement	$400+	$180 – $300	🔴
Head Unit Control Reset	$250+	$100 – $200	🔴
Shift Lever Control Unit Diagnosis/Repair	$1,800+ (if module replaced)	$150 – $200 (diagnosis), $800 – $1,500 (if module required)	🔴
Central Locking Motor	$500+	$180 – $400	🔴
Door Handle Illumination (Left)	$300+	$80 – $180	🔴
Reversing Camera Replacement	$1,000+	$500 – $900	🔴
Radar Sensor 2	$1,200+	$600 – $900 (diagnosed required before replacement)	🟡
Seat Control System Diagnosis/Repair	$250+ (diagnosis only)	$120 – $200 (diagnosis only)	🟡

1. Brake Fluid Replacement — moisture >4% (unsafe)

Fairness:
Brake fluid absorbs moisture over time, and >4% is getting into the “replace now” range for safety, especially in a heavy, high-performance vehicle like a G63. The typical job is 0.8–1.2 labor hours and $30–$60 for fluid.

Advice:
If quoted 1 hr labor (using ~$140–$200/hr in your area) plus parts, $160–$250 would be a fair total. More than $250, especially at an independent shop, is getting high.
Upsell risk:
None; that moisture reading is a legitimate safety concern.

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2. Oil Leak Repairs — oil filter housing and camshaft plug; clean residue on subframe/steering components

Fairness:
Oil leaks from the filter housing/cam plug are common on German V8 engines as they age. The job can be labor-intensive if access is tight; usually 2–4 hours labor is realistic. Parts often aren’t expensive, but gaskets/seals plus a little extra for cleaning products is normal.

Advice:
For a G63, a total of $400–$800 at an independent shop is reasonable depending on exact labor hours. If quotes are much above that, ask to break out the labor estimate, or consider a second opinion.
Upsell risk:
Cleaning off oil from subframe/steering is standard (they have to find the source), but watch out for any suggestions of extra “engine cleaning” that adds big money.

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3. EVAP System Leak Diagnosis/Repair — P044200, P045600

Fairness:
EVAP codes are common in Mercedes. Diagnosis should run about 1–2 hours of labor (may need to smoke-test the system). Repair can vary from a few dollars (loose gas cap) up to a few hundred (e.g., solenoid, valve, or line replacement).

Advice:
A fair quote for diagnosis is $125–$250; add repair only after confirm root cause. If charging lots for parts right away, question it unless there is evidence (photo, explanation).
Upsell risk:
Sometimes shops over-sell major parts for what’s just a loose cap or cracked hose; get diagnostic results first.

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4. Left Front TPMS Sensor — U116200

Fairness:
TPMS sensors are a basic job. Labor is often $20–$40 if the wheel is already off. Sensors run $45–$100 for OE, $25–$45 for good aftermarket.

Advice:
If quoted over $200 for a single TPMS sensor installed, look around; most tire shops can handle this for less.

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5. Starter Battery — B1F4500 excessive resistance

Fairness:
Mercedes G63 uses a big AGM battery. Batteries go for $220–$400 depending on spec, with Mercedes often on the high side. Labor is 0.6–1.2 hr; total at an independent shop should be $350–$500. Dealer can be more, but shouldn’t be $700+.

Advice:
If quoted much over $500, that’s high for an independent. The excess resistance fault means replacement is likely needed.

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6. Sunroof/Overhead Console Electrical Faults — B174901, B22A31C, B18722A

Fairness:
This is a tricky area; faults can be simple (just a switch or fuse) or complex (module/wiring). Diagnosis is usually 1 hr labor; repair depends on results.

Advice:
Make sure not charging for expensive parts until diagnosis, since many times these are minor fixes.
Upsell risk:
Common to suggest expensive control units when sometimes cleaning a connector or re-flashing software fixes the issue.

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7. A/C Air Quality Sensor — 912749 internal fault

Fairness:
Part is often $70–$120. Labor is usually 0.6–1.2 hr. All-in, $180–$300 is fair at an independent shop.

Advice:
DIY is easy if handy. If quoted more than $350–$400, it's high.

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8. Head Unit — B21A100 control unit reset noted

Fairness:
A control unit reset usually involves just a scan tool and quick reset; should be a diagnostic labor charge (1 hr max).

Advice:
If not charging for a new part, a $100–$200 diagnostic fee is normal. If pricing much more, ask for justification.

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9. Shift Lever Control Unit — P060700

Fairness:
Controller faults can be minor or require a shift module. Diagnosis is 1 hr; replacement (if needed) can run 2–4 hr plus parts, which can be expensive on a G63.

Advice:
Don’t approve replacement until diagnosis confirms. Get an estimate for the part (could be $600–$1,200 just for MB parts).
Upsell risk:
Easy area to sell a full module when sometimes a software update resolves it.

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10. Central Locking Motor — B18B113 open circuit

Fairness:
Actuator replacement is a 1–2 hr labor, part is $100–$200 usually.

Advice:
Anything beyond $350–$400 should be questioned unless multiple doors are involved.

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11. Door Handle Illumination (Left) — B173915

Fairness:
A minor issue; LED/module is $45+; labor up to 1 hr.

Advice:
If quoted much above $200 for just the light, ask for a breakdown.

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12. Reversing Camera — B21FF04 internal fault

Fairness:
Factory MB camera is expensive ($350–$600), with labor often 1–2 hr. Total repair at an independent: $500–$900.

Advice:
Cheaper aftermarket solutions are available but may not integrate well with MB system.

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13. Radar Sensor 2 — U150487 communication missing

Fairness:
Radars are pricey ($500+). Labor is often 1 hr. These are not upsell items but ensure the diagnosis is solid, as a communication fault can be a bad wire, not the sensor itself.

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14. Seat Control System — B1E6F16 voltage below limit

Fairness:
Usually electrical, possibly a motor or a connector issue. Diagnosis is 1 hr labor; don’t approve expensive parts until root cause is known.

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Red flags for possible upsell:

• Anything that jumps into module/sensor/ECU replacement without thorough diagnosis.
• “Engine cleaning” charges beyond cleaning spill residue.
• Bundling multiple diagnostic fees together without clear breakdown.

What’s fair and what’s high?

• Hourly rates provided line up well with the jobs.
• If any single line for a simple component or sensor is quoted at $400–$600+ (without it being a factory part/module/major electrical), that’s too high.
• Mercedes parts are more expensive than average, but don’t let them swap expensive items until the true cause is nailed down. Ask for photos, even old parts back if they replace them.

Practical suggestion:

• For most of this, an experienced independent European specialist will cost significantly less than a Mercedes dealer.
• Don’t hesitate to ask for part numbers, photos, or what the repair would cost if supplying the part (for simple sensors/batteries).
• If a quoted price for a job seems off compared to above numbers, get a second opinion with research in hand.

Most of these issues are real and not typical “service upsells,” but electrical faults often get over-quoted before proper diagnosis. Go one by one—approval is not needed for everything at once. If a line seems high or vague, ask for clarification before committing. Check back here with specific numbers if unsure about anything.